section{

    width: 90%;
    padding: 10px;
    padding-bottom: 20px;
    margin: 25px auto;
    box-shadow: 0px 0px 10px #bbb;
    background-color: #fff;
}

.imgretour {
    width: 40px;
}

.imgboutonretour {
    width: 100px;
    display:block;
    margin-left: auto;
    margin-right: auto;
}

.container {
    column-count: 2;
    
  }