body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.content {
    flex: 1;
}

.big-text {
    font-size: 3.5em;
}

.logo-connexion {
    position: absolute;
    width: 300px;
    right: 0;
    top: auto;
}

.sep {
    border: 0;
    border-top: 3px solid #000000;
    width: 50%;
    margin: 40px auto;
}

.btn-group-centered {
    display: flex;
    justify-content: center;
}

.btn-group {
    margin: 5px;
}