.content{width: 500px;margin: 0 auto;margin-top: 200px;}
.content h1{text-align: center;margin-bottom: 20px;}
.login-submit{text-align: center;margin-left:0px}
@media screen and (max-width: 450px){
    .layui-input, .layui-textarea{
        width: 80%;
    }
    .content{width:auto}
    .layui-form-label{
      width: auto;
    }
    .layui-input-block{margin-left:0px;}
    .layui-form-item{
        width: 80%;
         margin: 15px 10%;
    }
    
}