.install_mian {
    width: 70%;
    overflow: hidden;
}
.install_width50 {
    width:50%;
    padding: 15px 0;
    float: left;
    border-bottom:1px solid #e5e5e5;
}
.install_form{
    font-size: 16px;
    margin:10px 0;
    font-weight: bold;
}
.install_form span{
    float: left;
    display: inline-block;
    width:30%;
}
.install_index_input{
    width:30%;
    text-align: center;
    display: inline-block;
    word-wrap: break-word;
}
.install_index_input:focus{
    border:1px solid #73a2e9;
}
.install_color{
    color:#73a2e9;
    float: right;
    font-size: 14px;
    height: 30px;
    line-height: 30px;
    margin-bottom: 3px;
    margin-left: 20px;
    margin-top: 15px;
}