.cz_img{
    width:100%;
    text-align:center;
    margin-top:50px;
}
.yh{
    width:200;
    text-align: center;
    font-size:20px;
    line-height:50px;
}
.but1{
    width:100px;
    height:50px;
    font-size:20px;
}
.vo1{
    width:120px;
    height:50px;
    font-size:15px;
    line-height:50px;
}
.text1{
    height:20px;
    font-size:15px;
    line-height:100px;
}
.a2{
    color:burlywood;
}