#back-to-top {
    background-color: #00CD00;
    bottom: 0;
    box-shadow: 0 0 6px #00CD00;
    color: #444444;
    padding: 10px 10px;
    position: fixed;
    right: 50px;
    cursor: pointer;
}.qq{
    color:red;
    font-size:15px;
    margin:8px;
   font-weight: 500;
}
.gonggao{
    margin:8px;
 font-size:16px;
    color:blue;
}/* 设置签名格式 */
#MySignature {
    display: none;
    background-color: #B2E866;
    border-radius: 10px;
    box-shadow: 1px 1px 1px #6B6B6B;
    padding: 10px;
    line-height: 1.5;
    text-shadow: 1px 1px 1px #FFF;
    font-size: 16px;
    font-family: 'Microsoft Yahei';
}