.background{width:100%;height:100%;z-index:1;position:absolute}.from{z-index:-1;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:456px;height:318px;background-image:url(../img/bottombackground.24ebc951.png)}.main .top{text-align:center;margin:30px 0;font-size:24px;color:#4bf3f9}.main .demo-ruleForm .sub{margin-left:75px}.main .demo-ruleForm .col .el-form-item__label{color:#4bf3f9}