.link-lighten {
    font-size: 18px;
}

.bttn {
    width: 300px;
    margin: 10px;
}

.flatfield {
    width: 300px;
    margin: 10px;
}

.container-xs {
    width: 400px;
    padding: 2rem;
    margin-top: 10%;
    opacity: 0.95;
}

.margin-auto {
    margin-left: auto;
    margin-right: auto;
}

body {
    background-size: cover;
}