*{
    margin: 0;
    padding: 0;
}
.mask_c {
    position: fixed;
    font-size: 16px;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, .6);
    z-index: 1000001;
    display: none;
    text-align: center;
}

.mask_c .mask_c_title {
    color: #fff;
    position: absolute;
    width: 100%;
    top: 41%;
    font-weight: bold;
    line-height: 1.75em;
}
.mask_c .mask_c_title span {
    font-size:  1.12em;
    display: inline-block;
}
.mask_c .mask_c_i{
    position: absolute;
    top: 33%;
    width: 100%;
}
.mask_c .mask_c_img{
    display: inline-block;
    background-image: url(../images/topic_bg.png);
    background-repeat: no-repeat;
    width: 4.5em;
    height: 3em;
    background-size: 62%;
    background-position: center 0;
}
.mask_c .mask_c_b{
    position: absolute;
    top: 54.5%;
    width: 100%;
}
.mask_c .mask_c_button {
    color: #333333;
    display: inline-block;
    border-radius: 3px;
    background-image:url(../images/zhidao_bg.png);
    background-repeat: no-repeat;
    width: 134px;
    height: 34px;
    line-height: 35px;
    -webkit-background-size: cover;
    -o-background-size: cover;
    background-position: center 0;
    font-size: 0.8em;
}
#copyText{
    display: none;
}