/* CSS Document */
img {
  max-width: 100%;
  width: 100% \9;
}
/* 配合bootsrap 内容图片自适应*/
/* 滚动到顶部 */
#btnScrollTop {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 99;
    font-size: 18px;
    border: none;
    outline: none;
    background-color: #EC982C;
    color: white;
    cursor: pointer;
    padding: 10px 15px;
    border-radius: 10px;
}
#btnScrollTop:hover {
    background-color: #E77817;
}
/* 滚动到顶部end */