@charset "utf-8";
/* CSS Document */
.scroll-top {
    position: fixed;
    right: 20px;
    bottom: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #333;
    color: #fff;
    border: none;
    cursor: pointer;
    display: none;           /* 最初は非表示 */
    z-index: 9999;
}