/* 关于 */
#about {
    width: 450px;
    line-height: 40px;
    margin-left: auto;
    margin-right: auto;
    margin-top: 70px;
    font-weight: 500;
    font-size: 20px;
    color: rgba(220, 220, 220, .8);
}

.right h1 {
    margin-top: 50px;
    text-align: center;
    color:rgba(220, 220, 220, .8);
}