body {
    height: 100%;
    margin: 0;
    color: #858796;
}

#content {
    background-color: #f8f9fc;
}

/* Connexion */

#login_main {
    background: linear-gradient(180deg, #5C6F7C 10%, #32434E 100%); 
    background-size: cover;
}

/* Back to top */

#back_to_top {
    clip-path: circle();
    width: 50px;
    line-height: 100px;
    overflow: hidden;
    z-index: 0;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.5s ease-in-out, visibility 0.5s;
    cursor: pointer;
    position: fixed;
    bottom: 2%;
    right: 2%;
    background-color: #198754;
    color: #ffffff;
    text-align: center;
    font-size: 30px;
    text-decoration: none;
}

#back_to_top.show {
    visibility: visible;
    opacity: 1;
}

#back_to_top:hover {
    background-color: #ffffff;
    color: #198754;
}