#snackbar {
    display: block;
    visibility: visible;
    width: 50%;
    background-color: #2E486F;
    color: #fff;
    text-align: center;
    border-radius: 12px;
    padding: 1rem;
    position: fixed;
    z-index: 9999;
    bottom: 2rem;
    margin-right: 25%;
    margin-left: 25%;
    font-size: 1rem; /*1rem = 16px*/
    font-family: Raleway, sans-serif;
    opacity: 0;
    transition: opacity 0.35s ease-out;
}

#snackbar.show {
    opacity: 1;
    z-index: 9999;
    transition: opacity 0.35s ease-out;
}

@media only screen and (min-width:320px) and (max-width:425px)  {
    #snackbar {
        width:80%;
        margin-right: 10%;
        margin-left: 10%;
    }
}