蒙版点击登录后阅读(未登录不能阅读全部)

.vip {
width: 100%;
height: 100px;
line-height: 100px;
background-image: linear-gradient(-180deg,rgba(255,255,255,0) 0%,#fff 70%);
text-align: center;
position: relative;
z-index: 998;
padding-top: 220px;
margin-bottom: 16px;
margin-top: -220px;
}
.detail-body{min-height: 100%!important;}


<div class="vip" style="text-align: center">
<button type="button" class="layui-btn layui-btn-radius" onclick="doLogin()">登录后阅读剩余全文</button>
</div>

function doLogin(){
window.location.href="/admin/Login";
}

效果如下图：