main.container {
    max-width: 30rem;
}

/* nav */
@media only screen and (max-width: 440px) {
    .user-info {
        display: none;
    }
}

.username {
    text-decoration: underline dashed;
}

button#signout {
    font-size: 0.8em;
    margin-bottom: 0;
    padding: 0;
    border: none;
    background: none;
}

/* end nav */

/* disappearing alert */
.alert {
    visibility: hidden;
}

.disappear {
    animation: disappear 2s;
}

@keyframes disappear {
    0% {
        visibility: visible;
        opacity: 1;
    }

    90% {
        visibility: visible;
        opacity: 1;
    }

    100% {
        visibility: hidden;
        opacity: 0;
    }
}

/* end disappearing alert */