.container {
  display: flex;
}

.bienvenue {
  float: left;
  // display: inline-block;
  // height: 300px;
  border: 4px solid #5d5fef;
  border-radius: 10px;
  margin-top: 50px;
  // margin-left: 200px;
  padding-right: 10px;
  padding-left: 10px;
}

.titre {
  text-align: center;
}

p {
  font-size: 1em;
  line-height: 2em;
}
.connexion {
  // float: right;
  height: 350px;
  display: inline;
  margin-top: -40px;
  margin-left: 10px;
  // margin-right: 200px;
}

.pub {
  display: flex;
  flex-wrap: wrap;
  padding-top: 100px;
  padding-right: 200px;
  padding-left: 200px;
  justify-content: space-between;
}

img {
  border: 1px solid #d3d3d3;
  border-radius: 10px;
  box-shadow: 6px 6px #d3d3d3;
}