.zhinian_hide {
    display: block;
    background: grey;
    padding: 15px 0;
    text-align: center;
    position: relative;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    line-height: normal;
    color: white;
}
.zhinian_hide__button {
    position: relative;
    font-style: normal;
    cursor: pointer;
    color: blue;
}