#scroll-top {
    position: fixed;
    right: 10px;
    width: 200px;
    display: none;
    cursor: pointer;
    margin-bottom: 2px;
}

#scroll-top img {
    float: right;
}

@media only screen and (min-width: 330px) {
    #contents {
        padding: 0 10px;
    }
    footer #scroll-top {
        position: fixed;
        right: -20px;
        bottom: 10px;
        z-index: 99999;
    }

    footer #scroll-top img {
        width: 100px;
        height: auto;
    }

    footer #scroll-top a {
        display: block;
        background: #fff;
        border: 1px solid #ddd;
        padding: 10px 20px;
        font-size: 12px;
        text-decoration: none;
    }
}

@media only screen and (min-width: 768px) {
    #contents {
        padding: 0px;
    }

    footer #scroll-top {
        right: 10px;
        bottom: 10px;
    }

    footer #scroll-top img {
        width: 100%;
        height: auto;
    }
}