header {
  position: sticky;
  top: 0;
  width: 100%;
  height: 80px;
  margin-bottom: 25px;
  background-color: #ffffff;
  background-size: cover;
  background-repeat: no-repeat;
  text-align: left;
  z-index: 1;
}

body {
  background-color: #f3f7f7;
}

ul {
  display: none;
}

li {
  list-style-image: url("../images/bullet.png");
}
.containerreusite,
.containervivreensemble,
.containercovid,
.containerfun {
  background-color: #ffffff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 1em gray;
  margin-bottom: 30px;
}

main {
  margin-left: 10%;
  margin-right: 10%;
}
.random,.button-primary {
  display: block;
  margin: auto;
}

.accordeon {
  position: absolute;
  right: 20px;
  padding: 0 18px;
  background-color: rgb(255, 255, 255);
  overflow: hidden;
  cursor: pointer;
}

.active {
  display: block;
}

.reduire {
  transition: max-height 0.2s ease-out;
}