yunohost-admin/css/style.css

#slider {
    margin-left: auto;
    margin-right: auto;
    margin-top: 2%;
    background: #e8e8e8;
    width: 247px;
    height: 370px;
    position: relative;
    overflow: hidden;
    text-align: left;
}

#slider-container {
    width: 494px;
    height: 370px;
}

#main {
    background: #e8e8e8;
    float: left;
    width: 247px;
    height: 370px;
    position: relative;
    overflow: hidden;
}

.block {
    display: inline-block;
    height: 370px;
}