diff --git a/searx/static/themes/oscar/css/logicodev-dark.css b/searx/static/themes/oscar/css/logicodev-dark.css
index 99e9c2a22..d3e61eaea 100644
--- a/searx/static/themes/oscar/css/logicodev-dark.css
+++ b/searx/static/themes/oscar/css/logicodev-dark.css
@@ -412,7 +412,8 @@ input[type=checkbox]:not(:checked) + .label_hide_if_checked + .label_hide_if_not
   background-color: #068922;
   color: white;
 }
-.custom-select {
+.custom-select,
+.custom-select-rtl {
   appearance: none;
   -webkit-appearance: none;
   -moz-appearance: none;
@@ -430,6 +431,9 @@ ZQAyMDE2LTA3LTI0VDExOjU1OjU4KzAyOjAwRFqFOQAAACV0RVh0ZGF0ZTptb2RpZnkAMjAxNi0w
 Ny0yNFQxMToxNTowMCswMjowMP7RDgQAAAAZdEVYdFNvZnR3YXJlAHd3dy5pbmtzY2FwZS5vcmeb
 7jwaAAAAAElFTkSuQmCC) 96% no-repeat;
 }
+.custom-select-rtl {
+  background-position-x: 4%;
+}
 .search-margin {
   margin-bottom: 0.6em;
 }
diff --git a/searx/static/themes/oscar/css/logicodev-dark.min.css b/searx/static/themes/oscar/css/logicodev-dark.min.css
index 04c3561b9..6018b54ea 100644
--- a/searx/static/themes/oscar/css/logicodev-dark.min.css
+++ b/searx/static/themes/oscar/css/logicodev-dark.min.css
@@ -1 +1 @@
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#ccc;border-radius:0}.onoffswitch-label{display:block;overflow:hidden;cursor:pointer;border:2px solid #FFF!important;border-radius:50px!important}.onoffswitch-inner{display:block;transition:margin .3s ease-in 0s}.onoffswitch-inner:before,.onoffswitch-inner:after{display:block;float:left;width:50%;height:30px;padding:0;line-height:40px;font-size:20px;box-sizing:border-box;content:"";background-color:#EEE}.onoffswitch-switch{display:block;width:37px;background-color:#01d7d4;position:absolute;top:0;bottom:0;right:0;border:2px solid #FFF;border-radius:50px!important;transition:all .3s ease-in 0s}.onoffswitch-checkbox:checked+.onoffswitch-label .onoffswitch-inner{margin-right:0}.onoffswitch-checkbox:checked+.onoffswitch-label .onoffswitch-switch{right:71px;background-color:#A1A1A1}.onoffswitch-checkbox:focus+.onoffswitch-label .onoffswitch-switch{border:3px solid #444}.result_header{margin-top:0;margin-bottom:2px;font-size:16px}.result_header .favicon{margin-bottom:-3px}.result_header 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a{display:block;width:100%;background-size:cover}.img-thumbnail{margin:5px;max-height:128px;min-height:128px}.result-videos{clear:both}.result-videos hr{margin:5px 0 15px 0}.result-videos .collapse{width:100%}.result-videos .in{margin-bottom:8px}.result-torrent{clear:both}.result-torrent b{margin-right:5px;margin-left:5px}.result-torrent .seeders{color:#2ecc71}.result-torrent .leechers{color:#f35e77}.result-map{clear:both}.result-code{clear:both}.result-code .code-fork,.result-code .code-fork a{color:#666}.suggestion_item{margin:2px 5px;max-width:100%}.suggestion_item .btn{max-width:100%;white-space:normal;word-wrap:break-word;text-align:left}.result_download{margin-right:5px}#pagination{margin-top:30px;padding-bottom:60px}.label-default{color:#666;background:0 0}.result .text-muted small{word-wrap:break-word}.modal-wrapper{box-shadow:0 5px 15px rgba(0,0,0,.5)}.modal-wrapper{background-clip:padding-box;background-color:#fff;border:1px solid rgba(0,0,0,.2);border-radius:6px;box-shadow:0 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solid;color:#666;background:url(data:image/png;base64,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) 96% no-repeat}.search-margin{margin-bottom:.6em}.visually-hidden{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px 1px 1px 1px);clip:rect(1px,1px,1px,1px);white-space:nowrap}.label-danger,.btn-danger{background:#c9432f}.label-success,.btn-success{background:#068922}select.form-control{border-color:#888!important}#advanced-search-container{display:none;text-align:left;margin-bottom:1rem;clear:both}#advanced-search-container label,#advanced-search-container .input-group-addon{font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;border-right:none;color:#666;padding-bottom:.4rem;padding-right:.7rem;padding-left:.7rem}#advanced-search-container label:last-child,#advanced-search-container .input-group-addon:last-child{border-right:#ddd 1px solid}#advanced-search-container input[type=radio]{display:none}#advanced-search-container input[type=radio]:checked+label{color:#29314d;font-weight:700;border-bottom:#01d7d4 5px 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\ No newline at end of file
+*{border-radius:0!important}html{position:relative;min-height:100%;color:#29314d}body{font-family:Roboto,Helvetica,Arial,sans-serif;margin-bottom:80px;background-color:#fff}body a{color:#08c}.footer{position:absolute;bottom:0;width:100%;height:60px;text-align:center;color:#999}input[type=checkbox]:checked+.label_hide_if_checked,input[type=checkbox]:checked+.label_hide_if_not_checked+.label_hide_if_checked{display:none}input[type=checkbox]:not(:checked)+.label_hide_if_not_checked,input[type=checkbox]:not(:checked)+.label_hide_if_checked+.label_hide_if_not_checked{display:none}.onoff-checkbox{width:15%}.onoffswitch{position:relative;width:110px;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.onoffswitch-checkbox{opacity:0;position:absolute}.onoffswitch-checkbox:before{content:"";display:inline-block;width:16px;height:16px;margin-right:10px;position:absolute;left:0;bottom:1px;background-color:#fff;border:1px solid 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\ No newline at end of file
diff --git a/searx/static/themes/oscar/css/logicodev.css b/searx/static/themes/oscar/css/logicodev.css
index 5d0a223a6..45a2597ae 100644
--- a/searx/static/themes/oscar/css/logicodev.css
+++ b/searx/static/themes/oscar/css/logicodev.css
@@ -385,7 +385,8 @@ input[type=checkbox]:not(:checked) + .label_hide_if_checked + .label_hide_if_not
   background-color: #068922;
   color: white;
 }
-.custom-select {
+.custom-select,
+.custom-select-rtl {
   appearance: none;
   -webkit-appearance: none;
   -moz-appearance: none;
@@ -403,6 +404,9 @@ ZQAyMDE2LTA3LTI0VDExOjU1OjU4KzAyOjAwRFqFOQAAACV0RVh0ZGF0ZTptb2RpZnkAMjAxNi0w
 Ny0yNFQxMToxNTowMCswMjowMP7RDgQAAAAZdEVYdFNvZnR3YXJlAHd3dy5pbmtzY2FwZS5vcmeb
 7jwaAAAAAElFTkSuQmCC) 96% no-repeat;
 }
+.custom-select-rtl {
+  background-position-x: 4%;
+}
 .search-margin {
   margin-bottom: 0.6em;
 }
diff --git a/searx/static/themes/oscar/css/logicodev.min.css b/searx/static/themes/oscar/css/logicodev.min.css
index 8c2bcdc5b..dff693bd5 100644
--- a/searx/static/themes/oscar/css/logicodev.min.css
+++ b/searx/static/themes/oscar/css/logicodev.min.css
@@ -1 +1 @@
-.searx-navbar{background:#29314d;height:2.3rem;font-size:1.3rem;line-height:1.3rem;padding:.5rem;font-weight:700;margin-bottom:.8rem}.searx-navbar a,.searx-navbar a:hover{margin-right:2rem;color:#fff;text-decoration:none}.searx-navbar .instance a{color:#01d7d4;margin-left:2rem}#main-logo{margin-top:20vh;margin-bottom:25px}#main-logo>img{max-width:350px;width:80%}*{border-radius:0!important}html{position:relative;min-height:100%;color:#29314d}body{font-family:Roboto,Helvetica,Arial,sans-serif;margin-bottom:80px;background-color:#fff}body a{color:#08c}.footer{position:absolute;bottom:0;width:100%;height:60px;text-align:center;color:#999}input[type=checkbox]:checked+.label_hide_if_checked,input[type=checkbox]:checked+.label_hide_if_not_checked+.label_hide_if_checked{display:none}input[type=checkbox]:not(:checked)+.label_hide_if_not_checked,input[type=checkbox]:not(:checked)+.label_hide_if_checked+.label_hide_if_not_checked{display:none}.onoff-checkbox{width:15%}.onoffswitch{position:relative;width:110px;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.onoffswitch-checkbox{opacity:0;position:absolute}.onoffswitch-checkbox:before{content:"";display:inline-block;width:16px;height:16px;margin-right:10px;position:absolute;left:0;bottom:1px;background-color:#fff;border:1px solid #ccc;border-radius:0}.onoffswitch-label{display:block;overflow:hidden;cursor:pointer;border:2px solid #FFF!important;border-radius:50px!important}.onoffswitch-inner{display:block;transition:margin .3s ease-in 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solid}#check-advanced:focus+label{text-decoration:underline}#check-advanced:checked~#advanced-search-container{display:block}.advanced{padding:0;margin-top:.3rem;text-align:right}.advanced label,.advanced select{cursor:pointer}.cursor-text{cursor:text!important}.cursor-pointer{cursor:pointer!important}pre,code{font-family:'Ubuntu Mono','Courier New','Lucida Console',monospace!important}.lineno{margin-right:5px}.highlight .hll{background-color:#ffc}.highlight{background:#f8f8f8}.highlight .c{color:#556366;font-style:italic}.highlight .err{border:1px solid #ffa92f}.highlight .k{color:#BE74D5;font-weight:700}.highlight .o{color:#d19a66}.highlight .cm{color:#556366;font-style:italic}.highlight .cp{color:#bc7a00}.highlight .c1{color:#556366;font-style:italic}.highlight .cs{color:#556366;font-style:italic}.highlight .gd{color:#a00000}.highlight .ge{font-style:italic}.highlight .gr{color:red}.highlight .gh{color:navy;font-weight:700}.highlight .gi{color:#00a000}.highlight .go{color:#888}.highlight .gp{color:navy;font-weight:700}.highlight .gs{font-weight:700}.highlight .gu{color:purple;font-weight:700}.highlight .gt{color:#04d}.highlight .kc{color:#BE74D5;font-weight:700}.highlight .kd{color:#BE74D5;font-weight:700}.highlight .kn{color:#BE74D5;font-weight:700}.highlight .kp{color:#be74d5}.highlight .kr{color:#BE74D5;font-weight:700}.highlight .kt{color:#d46c72}.highlight .m{color:#d19a66}.highlight .s{color:#86c372}.highlight .na{color:#7d9029}.highlight .nb{color:#be74d5}.highlight .nc{color:#61AFEF;font-weight:700}.highlight .no{color:#d19a66}.highlight .nd{color:#a2f}.highlight .ni{color:#999;font-weight:700}.highlight .ne{color:#D2413A;font-weight:700}.highlight .nf{color:#61afef}.highlight .nl{color:#a0a000}.highlight .nn{color:#61AFEF;font-weight:700}.highlight .nt{color:#BE74D5;font-weight:700}.highlight .nv{color:#dfc06f}.highlight .ow{color:#A2F;font-weight:700}.highlight .w{color:#d7dae0}.highlight .mf{color:#d19a66}.highlight .mh{color:#d19a66}.highlight .mi{color:#d19a66}.highlight .mo{color:#d19a66}.highlight .sb{color:#86c372}.highlight .sc{color:#86c372}.highlight .sd{color:#86C372;font-style:italic}.highlight .s2{color:#86c372}.highlight .se{color:#B62;font-weight:700}.highlight .sh{color:#86c372}.highlight .si{color:#B68;font-weight:700}.highlight .sx{color:#be74d5}.highlight .sr{color:#b68}.highlight .s1{color:#86c372}.highlight .ss{color:#dfc06f}.highlight .bp{color:#be74d5}.highlight .vc{color:#dfc06f}.highlight .vg{color:#dfc06f}.highlight .vi{color:#dfc06f}.highlight .il{color:#d19a66}.highlight .lineno{-webkit-touch-callout:none;-webkit-user-select:none;-khtml-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;cursor:default;color:#556366}.highlight .lineno::selection{background:0 0}.highlight .lineno::-moz-selection{background:0 0}.highlight pre{background-color:#282C34;color:#D7DAE0;border:none;margin-bottom:25px;font-size:15px;padding:20px 10px}.highlight{font-weight:700}.table>tbody>tr>td,.table>tbody>tr>th{vertical-align:middle!important}.nav-tabs.nav-justified{margin-bottom:20px}p{margin:10px 0}input.cursor-text{margin:10px 0}
\ No newline at end of file
+.searx-navbar{background:#29314d;height:2.3rem;font-size:1.3rem;line-height:1.3rem;padding:.5rem;font-weight:700;margin-bottom:.8rem}.searx-navbar a,.searx-navbar a:hover{margin-right:2rem;color:#fff;text-decoration:none}.searx-navbar .instance a{color:#01d7d4;margin-left:2rem}#main-logo{margin-top:20vh;margin-bottom:25px}#main-logo>img{max-width:350px;width:80%}*{border-radius:0!important}html{position:relative;min-height:100%;color:#29314d}body{font-family:Roboto,Helvetica,Arial,sans-serif;margin-bottom:80px;background-color:#fff}body a{color:#08c}.footer{position:absolute;bottom:0;width:100%;height:60px;text-align:center;color:#999}input[type=checkbox]:checked+.label_hide_if_checked,input[type=checkbox]:checked+.label_hide_if_not_checked+.label_hide_if_checked{display:none}input[type=checkbox]:not(:checked)+.label_hide_if_not_checked,input[type=checkbox]:not(:checked)+.label_hide_if_checked+.label_hide_if_not_checked{display:none}.onoff-checkbox{width:15%}.onoffswitch{position:relative;width:110px;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.onoffswitch-checkbox{opacity:0;position:absolute}.onoffswitch-checkbox:before{content:"";display:inline-block;width:16px;height:16px;margin-right:10px;position:absolute;left:0;bottom:1px;background-color:#fff;border:1px solid #ccc;border-radius:0}.onoffswitch-label{display:block;overflow:hidden;cursor:pointer;border:2px solid #FFF!important;border-radius:50px!important}.onoffswitch-inner{display:block;transition:margin .3s ease-in 0s}.onoffswitch-inner:before,.onoffswitch-inner:after{display:block;float:left;width:50%;height:30px;padding:0;line-height:40px;font-size:20px;box-sizing:border-box;content:"";background-color:#EEE}.onoffswitch-switch{display:block;width:37px;background-color:#01d7d4;position:absolute;top:0;bottom:0;right:0;border:2px solid #FFF;border-radius:50px!important;transition:all .3s ease-in 0s}.onoffswitch-checkbox:checked+.onoffswitch-label .onoffswitch-inner{margin-right:0}.onoffswitch-checkbox:checked+.onoffswitch-label .onoffswitch-switch{right:71px;background-color:#A1A1A1}.onoffswitch-checkbox:focus+.onoffswitch-label .onoffswitch-switch{border:3px solid #444}.result_header{margin-top:0;margin-bottom:2px;font-size:16px}.result_header .favicon{margin-bottom:-3px}.result_header a{color:#29314d;text-decoration:none}.result_header a:hover{color:#08c}.result_header a:visited{color:#684898}.result_header a .highlight{background-color:#f6f9fa}.result-content,.result-format,.result-source{margin-top:2px;margin-bottom:0;word-wrap:break-word;color:#666;font-size:13px}.result-content .highlight,.result-format .highlight,.result-source .highlight{font-weight:700}.result-source{font-size:10px;float:left}.result-format{font-size:10px;float:right}.external-link{color:#068922;font-size:12px;margin-bottom:15px}.external-link a{margin-right:3px}.result-default,.result-code,.result-torrent,.result-videos,.result-map{clear:both;padding:.5em 4px}.result-default:hover,.result-code:hover,.result-torrent:hover,.result-videos:hover,.result-map:hover{background-color:#f6f9fa}.result-images{float:left!important;width:24%;margin:.5%}.result-images a{display:block;width:100%;background-size:cover}.img-thumbnail{margin:5px;max-height:128px;min-height:128px}.result-videos{clear:both}.result-videos hr{margin:5px 0 15px 0}.result-videos .collapse{width:100%}.result-videos .in{margin-bottom:8px}.result-torrent{clear:both}.result-torrent b{margin-right:5px;margin-left:5px}.result-torrent .seeders{color:#2ecc71}.result-torrent .leechers{color:#f35e77}.result-map{clear:both}.result-code{clear:both}.result-code .code-fork,.result-code .code-fork a{color:#666}.suggestion_item{margin:2px 5px;max-width:100%}.suggestion_item .btn{max-width:100%;white-space:normal;word-wrap:break-word;text-align:left}.result_download{margin-right:5px}#pagination{margin-top:30px;padding-bottom:60px}.label-default{color:#666;background:0 0}.result .text-muted small{word-wrap:break-word}.modal-wrapper{box-shadow:0 5px 15px rgba(0,0,0,.5)}.modal-wrapper{background-clip:padding-box;background-color:#fff;border:1px solid rgba(0,0,0,.2);border-radius:6px;box-shadow:0 3px 9px rgba(0,0,0,.5);outline:0 none;position:relative}@media screen and (max-width:75em){.img-thumbnail{object-fit:cover}}.infobox .panel-heading{background-color:#f6f9fa}.infobox .panel-heading .panel-title{font-weight:700}.infobox .header_url{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}.infobox p{font-family:"DejaVu Serif",Georgia,Cambria,"Times New Roman",Times,serif!important;font-style:italic}.infobox img{max-height:"250px"}.infobox .btn{background-color:#007ab8;border:none}.infobox .btn a{color:#fff;margin:5px}.infobox .infobox_part{margin-bottom:20px;word-wrap:break-word;table-layout:fixed}.infobox .infobox_part:last-child{margin-bottom:0}.infobox .infobox_toggle{width:100%;text-align:center;margin-bottom:0}.infobox .infobox_checkbox~.infobox_body{max-height:300px;overflow:hidden}.infobox .infobox_checkbox:checked~.infobox_body{max-height:none}.infobox .infobox_checkbox~.infobox_toggle .infobox_label_down{display:block}.infobox .infobox_checkbox~.infobox_toggle .infobox_label_up{display:none}.infobox .infobox_checkbox:checked~.infobox_toggle .infobox_label_up{display:block}.infobox .infobox_checkbox:checked~.infobox_toggle .infobox_label_down{display:none}.infobox .infobox_checkbox~.infobox_body img.infobox_part{display:none}.infobox .infobox_checkbox:checked~.infobox_body img.infobox_part{display:block}.search_categories,#categories{text-transform:capitalize;margin-bottom:.5rem;display:flex;flex-wrap:wrap;flex-flow:row wrap;align-content:stretch}.search_categories label,#categories label,.search_categories .input-group-addon,#categories .input-group-addon{flex-grow:1;flex-basis:auto;font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;border-right:none;color:#666;padding-bottom:.4rem;padding-top:.4rem;text-align:center;min-width:50px}.search_categories label:last-child,#categories label:last-child,.search_categories .input-group-addon:last-child,#categories .input-group-addon:last-child{border-right:#ddd 1px solid}.search_categories input[type=checkbox]:checked+label,#categories input[type=checkbox]:checked+label{color:#29314d;font-weight:700;border-bottom:#01d7d4 5px solid}#main-logo{margin-top:10vh;margin-bottom:25px}#main-logo>img{max-width:350px;width:80%}#q{box-shadow:none;border-right:none;border-color:#888}#search_form .input-group-btn .btn{border-color:#888}#search_form .input-group-btn .btn:hover{background-color:#068922;color:#fff}.custom-select,.custom-select-rtl{appearance:none;-webkit-appearance:none;-moz-appearance:none;font-size:1.2rem;font-weight:400;background-color:#fff;border:#888 1px solid;color:#666;background:url(data:image/png;base64,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) 96% no-repeat}.custom-select-rtl{background-position-x:4%}.search-margin{margin-bottom:.6em}.visually-hidden{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px 1px 1px 1px);clip:rect(1px,1px,1px,1px);white-space:nowrap}.label-danger,.btn-danger{background:#c9432f}.label-success,.btn-success{background:#068922}select.form-control{border-color:#888!important}#advanced-search-container{display:none;text-align:left;margin-bottom:1rem;clear:both}#advanced-search-container label,#advanced-search-container .input-group-addon{font-size:1.2rem;font-weight:400;background-color:#fff;border:#ddd 1px solid;border-right:none;color:#666;padding-bottom:.4rem;padding-right:.7rem;padding-left:.7rem}#advanced-search-container label:last-child,#advanced-search-container .input-group-addon:last-child{border-right:#ddd 1px solid}#advanced-search-container input[type=radio]{display:none}#advanced-search-container input[type=radio]:checked+label{color:#29314d;font-weight:700;border-bottom:#01d7d4 5px solid}#check-advanced:focus+label{text-decoration:underline}#check-advanced:checked~#advanced-search-container{display:block}.advanced{padding:0;margin-top:.3rem;text-align:right}.advanced label,.advanced select{cursor:pointer}.cursor-text{cursor:text!important}.cursor-pointer{cursor:pointer!important}pre,code{font-family:'Ubuntu Mono','Courier New','Lucida Console',monospace!important}.lineno{margin-right:5px}.highlight .hll{background-color:#ffc}.highlight{background:#f8f8f8}.highlight .c{color:#556366;font-style:italic}.highlight .err{border:1px solid #ffa92f}.highlight .k{color:#BE74D5;font-weight:700}.highlight .o{color:#d19a66}.highlight .cm{color:#556366;font-style:italic}.highlight .cp{color:#bc7a00}.highlight .c1{color:#556366;font-style:italic}.highlight .cs{color:#556366;font-style:italic}.highlight .gd{color:#a00000}.highlight .ge{font-style:italic}.highlight .gr{color:red}.highlight .gh{color:navy;font-weight:700}.highlight .gi{color:#00a000}.highlight .go{color:#888}.highlight .gp{color:navy;font-weight:700}.highlight .gs{font-weight:700}.highlight .gu{color:purple;font-weight:700}.highlight .gt{color:#04d}.highlight .kc{color:#BE74D5;font-weight:700}.highlight .kd{color:#BE74D5;font-weight:700}.highlight .kn{color:#BE74D5;font-weight:700}.highlight .kp{color:#be74d5}.highlight .kr{color:#BE74D5;font-weight:700}.highlight .kt{color:#d46c72}.highlight .m{color:#d19a66}.highlight .s{color:#86c372}.highlight .na{color:#7d9029}.highlight .nb{color:#be74d5}.highlight .nc{color:#61AFEF;font-weight:700}.highlight .no{color:#d19a66}.highlight .nd{color:#a2f}.highlight .ni{color:#999;font-weight:700}.highlight .ne{color:#D2413A;font-weight:700}.highlight .nf{color:#61afef}.highlight .nl{color:#a0a000}.highlight .nn{color:#61AFEF;font-weight:700}.highlight .nt{color:#BE74D5;font-weight:700}.highlight .nv{color:#dfc06f}.highlight .ow{color:#A2F;font-weight:700}.highlight .w{color:#d7dae0}.highlight .mf{color:#d19a66}.highlight .mh{color:#d19a66}.highlight .mi{color:#d19a66}.highlight .mo{color:#d19a66}.highlight .sb{color:#86c372}.highlight .sc{color:#86c372}.highlight .sd{color:#86C372;font-style:italic}.highlight .s2{color:#86c372}.highlight .se{color:#B62;font-weight:700}.highlight .sh{color:#86c372}.highlight .si{color:#B68;font-weight:700}.highlight .sx{color:#be74d5}.highlight .sr{color:#b68}.highlight .s1{color:#86c372}.highlight .ss{color:#dfc06f}.highlight .bp{color:#be74d5}.highlight .vc{color:#dfc06f}.highlight .vg{color:#dfc06f}.highlight .vi{color:#dfc06f}.highlight .il{color:#d19a66}.highlight .lineno{-webkit-touch-callout:none;-webkit-user-select:none;-khtml-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;cursor:default;color:#556366}.highlight .lineno::selection{background:0 0}.highlight .lineno::-moz-selection{background:0 0}.highlight pre{background-color:#282C34;color:#D7DAE0;border:none;margin-bottom:25px;font-size:15px;padding:20px 10px}.highlight{font-weight:700}.table>tbody>tr>td,.table>tbody>tr>th{vertical-align:middle!important}.nav-tabs.nav-justified{margin-bottom:20px}p{margin:10px 0}input.cursor-text{margin:10px 0}
\ No newline at end of file
diff --git a/searx/static/themes/oscar/less/logicodev/search.less b/searx/static/themes/oscar/less/logicodev/search.less
index a0cbe4d7d..01422873c 100644
--- a/searx/static/themes/oscar/less/logicodev/search.less
+++ b/searx/static/themes/oscar/less/logicodev/search.less
@@ -56,7 +56,7 @@
      color: white;
  }
 
-.custom-select {
+.custom-select, .custom-select-rtl {
     appearance: none;
     -webkit-appearance: none;
     -moz-appearance: none;
@@ -75,6 +75,10 @@ Ny0yNFQxMToxNTowMCswMjowMP7RDgQAAAAZdEVYdFNvZnR3YXJlAHd3dy5pbmtzY2FwZS5vcmeb
 7jwaAAAAAElFTkSuQmCC) 96% no-repeat;
 }
 
+.custom-select-rtl {
+    background-position-x: 4%;
+}
+
 .search-margin {
     margin-bottom: 0.6em;
 }
diff --git a/searx/templates/oscar/languages.html b/searx/templates/oscar/languages.html
index 9c00c9cea..0846caa96 100644
--- a/searx/templates/oscar/languages.html
+++ b/searx/templates/oscar/languages.html
@@ -1,5 +1,6 @@
+{% from 'oscar/macros.html' import custom_select_class %}
 <label class="visually-hidden" for="language">{{ _('Language') }}</label>
-<select class="language custom-select form-control" id="language" name="language" accesskey="l">
+<select class="language form-control {{ custom_select_class(rtl) }}" id="language" name="language" accesskey="l">
   <option value="all" {% if current_language == 'all' %}selected="selected"{% endif %}>{{ _('Default language') }}</option>
 {%- for lang_id,lang_name,country_name,english_name in language_codes | sort(attribute=1) -%}
   <option value="{{ lang_id }}" {% if lang_id == current_language %}selected="selected"{% endif %}>
diff --git a/searx/templates/oscar/macros.html b/searx/templates/oscar/macros.html
index 58f966997..f52d9713c 100644
--- a/searx/templates/oscar/macros.html
+++ b/searx/templates/oscar/macros.html
@@ -84,6 +84,10 @@
     {% endif %}
 {%- endmacro %}
 
+{% macro custom_select_class(rtl) -%}
+custom-select{% if rtl %}-rtl{% endif %}
+{%- endmacro %}
+
 {% macro checkbox_toggle(id, blocked) -%}
     <div class="onoffswitch">
         <input type="checkbox" id="{{ id }}" name="{{ id }}"{% if blocked %} checked="checked"{% endif %} class="onoffswitch-checkbox">
diff --git a/searx/templates/oscar/preferences.html b/searx/templates/oscar/preferences.html
index 89cc74ab7..8f67cbf93 100644
--- a/searx/templates/oscar/preferences.html
+++ b/searx/templates/oscar/preferences.html
@@ -1,4 +1,4 @@
-{% from 'oscar/macros.html' import preferences_item_header, preferences_item_header_rtl, preferences_item_footer, preferences_item_footer_rtl, checkbox_toggle, support_toggle %}
+{% from 'oscar/macros.html' import preferences_item_header, preferences_item_header_rtl, preferences_item_footer, preferences_item_footer_rtl, checkbox_toggle, support_toggle, custom_select_class %}
 {% extends "oscar/base.html" %}
 {% block title %}{{ _('preferences') }} - {% endblock %}
 {% block content %}
@@ -47,7 +47,7 @@
                     {% set locale_label = _('Interface language') %}
                     {% set locale_info = _('Change the language of the layout') %}
                     {{ preferences_item_header(locale_info, locale_label, rtl, 'locale') }}
-                        <select class="form-control" name="locale" id="locale">
+                        <select class="form-control {{ custom_select_class(rtl)}}" name="locale" id="locale">
                             {% for locale_id,locale_name in locales.items() | sort %}
                             <option value="{{ locale_id }}" {% if locale_id == current_locale %}selected="selected"{% endif %}>{{ locale_name }}</option>
                             {% endfor %}
@@ -57,7 +57,7 @@
                     {% set autocomplete_label = _('Autocomplete') %}
                     {% set autocomplete_info = _('Find stuff as you type') %}
                     {{ preferences_item_header(autocomplete_info, autocomplete_label, rtl, 'autocomplete') }}
-                        <select class="form-control" name="autocomplete" id="autocomplete">
+                        <select class="form-control {{ custom_select_class(rtl) }}" name="autocomplete" id="autocomplete">
                             <option value=""> - </option>
                             {% for backend in autocomplete_backends %}
                             <option value="{{ backend }}" {% if backend == autocomplete %}selected="selected"{% endif %}>{{ backend }}</option>
@@ -68,7 +68,7 @@
                     {% set image_proxy_label = _('Image proxy') %}
                     {% set image_proxy_info = _('Proxying image results through searx') %}
                     {{ preferences_item_header(image_proxy_info, image_proxy_label, rtl, 'image_proxy') }}
-                        <select class="form-control" name="image_proxy" id="image_proxy">
+                        <select class="form-control {{ custom_select_class(rtl) }}" name="image_proxy" id="image_proxy">
                             <option value="1" {% if image_proxy  %}selected="selected"{% endif %}>{{ _('Enabled') }}</option>
                             <option value="" {% if not image_proxy %}selected="selected"{% endif %}>{{ _('Disabled')}}</option>
                         </select>
@@ -77,7 +77,7 @@
                     {% set method_label = _('Method') %}
                     {% set method_info = _('Change how forms are submited, <a href="http://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol#Request_methods" rel="external">learn more about request methods</a>') %}
                     {{ preferences_item_header(method_info, method_label, rtl, 'method') }}
-                        <select class="form-control" name="method" id="method">
+                        <select class="form-control {{ custom_select_class(rtl) }}" name="method" id="method">
                             <option value="POST" {% if method == 'POST' %}selected="selected"{% endif %}>POST</option>
                             <option value="GET" {% if method == 'GET' %}selected="selected"{% endif %}>GET</option>
                         </select>
@@ -86,7 +86,7 @@
                     {% set safesearch_label = _('SafeSearch') %}
                     {% set safesearch_info = _('Filter content') %}
                     {{ preferences_item_header(safesearch_info, safesearch_label, rtl, 'safesearch') }}
-                        <select class="form-control" name="safesearch" id="safesearch">
+                        <select class="form-control {{ custom_select_class(rtl) }}" name="safesearch" id="safesearch">
                             <option value="2" {% if safesearch == '2' %}selected="selected"{% endif %}>{{ _('Strict') }}</option>
                             <option value="1" {% if safesearch == '1' %}selected="selected"{% endif %}>{{ _('Moderate') }}</option>
                             <option value="0" {% if safesearch == '0' %}selected="selected"{% endif %}>{{ _('None') }}</option>
@@ -96,7 +96,7 @@
                     {% set theme_label = _('Themes') %}
                     {% set theme_info = _('Change searx layout') %}
                     {{ preferences_item_header(theme_info, theme_label, rtl, 'theme') }}
-                        <select class="form-control" name="theme" id="theme">
+                        <select class="form-control {{ custom_select_class(rtl) }}" name="theme" id="theme">
                             {% for name in themes %}
                             <option value="{{ name }}" {% if name == theme %}selected="selected"{% endif %}>{{ name }}</option>
                             {% endfor %}
@@ -104,7 +104,7 @@
                     {{ preferences_item_footer(theme_info, theme_label, rtl) }}
 
                     {{ preferences_item_header(_('Choose style for this theme'), _('Style'), rtl, 'oscar_style') }}
-                        <select class="form-control" name="oscar-style" id="oscar_style">
+                        <select class="form-control {{ custom_select_class(rtl) }}" name="oscar-style" id="oscar_style">
                             <option value="logicodev" >Logicodev</option>
                             <option value="pointhi" {% if preferences.get_value('oscar-style') == 'pointhi' %}selected="selected"{% endif %}>Pointhi</option>
                             <option value="logicodev-dark" {% if preferences.get_value('oscar-style') == 'logicodev-dark' %}selected="selected"{% endif %}>Logicodev dark</option>
@@ -114,7 +114,7 @@
                     {% set label = _('Results on new tabs') %}
                     {% set info = _('Open result links on new browser tabs') %}
                     {{ preferences_item_header(info, label, rtl, 'results_on_new_tab') }}
-                        <select class="form-control" name="results_on_new_tab" id="results_on_new_tab">
+                        <select class="form-control {{ custom_select_class(rtl) }}" name="results_on_new_tab" id="results_on_new_tab">
                             <option value="1" {% if results_on_new_tab %}selected="selected"{% endif %}>{{ _('On') }}</option>
                             <option value="0" {% if not results_on_new_tab %}selected="selected"{% endif %}>{{ _('Off')}}</option>
                         </select>
@@ -123,7 +123,7 @@
                     {% set label = _('Open Access DOI resolver') %}
                     {% set info = _('Redirect to open-access versions of publications when available (plugin required)') %}
                     {{ preferences_item_header(info, label, rtl, 'doi_resolver') }}
-                        <select class="form-control" name="doi_resolver" id="doi_resolver">
+                        <select class="form-control {{ custom_select_class(rtl) }}" name="doi_resolver" id="doi_resolver">
                             {% for doi_resolver_name,doi_resolver_url in doi_resolvers.items() %}
                             <option value="{{ doi_resolver_name }}" {% if doi_resolver_name == current_doi_resolver %}selected="selected"{% endif %}>
                                     {{ doi_resolver_name }} - {{ doi_resolver_url }}
diff --git a/searx/templates/oscar/time-range.html b/searx/templates/oscar/time-range.html
index 181b57681..6087dd417 100644
--- a/searx/templates/oscar/time-range.html
+++ b/searx/templates/oscar/time-range.html
@@ -1,5 +1,6 @@
+{% from 'oscar/macros.html' import custom_select_class %}
 <label class="visually-hidden" for="time-range">{{ _('Time range') }}</label>
-<select name="time_range" id="time-range" class="custom-select form-control" accesskey="t">{{- "" -}}
+<select name="time_range" id="time-range" class="{{ custom_select_class(rtl) }} form-control" accesskey="t">{{- "" -}}
     <option id="time-range-anytime" value="" {{ "selected" if time_range=="" or not time_range  else ""}}>
         {{- _('Anytime') -}}
     </option>{{- "" -}}