.welcome-body {
    background-image: url('/img/background.png');
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
}

.welcome-card {
    box-sizing: border-box;
    min-width: 0;
}

.welcome-card input[type="text"],
.welcome-card input[type="password"] {
    box-sizing: border-box;
    display: block;
    width: 100%;
    min-width: 0;
}

@media (max-width: 639px) {
    /* iOS Safari renders fixed attachment poorly; fall back to a scrolling background. */
    .welcome-body {
        background-attachment: scroll;
    }
}