stylesheet.css

#snackbar {
     visibility: hidden;
     min-width: 250px;
     margin-left: -125px;
     background-color: #333;
     color: #fff;
     text-align: center;
     border-radius: 2px;
     padding: 16px;
     position: fixed;
     z-index: 1;
     left: 50%;
     bottom: 30px;
     font-size: 17px;
}
 #snackbar.show {
     visibility: visible;
     -webkit-animation: fadein 0.5s, fadeout 0.5s 2.5s;
     animation: fadein 0.5s, fadeout 0.5s 2.5s;
}
 @-webkit-keyframes fadein {
     from {
         bottom: 0;
         opacity: 0;
    }
     to {
         bottom: 30px;
         opacity: 1;
    }
}
 @keyframes fadein {
     from {
         bottom: 0;
         opacity: 0;
    }
     to {
         bottom: 30px;
         opacity: 1;
    }
}
 @-webkit-keyframes fadeout {
     from {
         bottom: 30px;
         opacity: 1;
    }
     to {
         bottom: 0;
         opacity: 0;
    }
}
 @keyframes fadeout {
     from {
         bottom: 30px;
         opacity: 1;
    }
     to {
         bottom: 0;
         opacity: 0;
    }
}
 #header-content {
     position: absolute;
     bottom: 0;
     left: 0;
}