SCSS 侧边栏动画实例 页面主体内容黑色透明背景并不可选

【实例简介】

SCSS 侧边栏动画实例 页面主体内容黑色透明背景并不可选,主体可设置为向右移动

【实例截图】

【核心代码】

<style>
body {
    font-family: "Lato", sans-serif;
    transition: background-color .5s;
}

.sidenav {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: #111;
    overflow-x: hidden;
    transition: 0.5s;
    padding-top: 60px;
}
#cover{width:100%;height:100%;top:0px;left:0px; background:rgba(255,255,0,0.3);display:none;position:absolute;}
.sidenav a {
    padding: 8px 8px 8px 32px;
    text-decoration: none;
    font-size: 25px;
    color: #818181;
    display: block;
    transition: 0.3s;
}

.sidenav a:hover, .offcanvas a:focus{
    color: #f1f1f1;
}

.sidenav .closebtn {
    position: absolute;
    top: 0;
    right: 25px;
    font-size: 36px;
    margin-left: 50px;
}

#main {
    transition: margin-left .5s;
    padding: 16px;
}

@media screen and (max-height: 450px) {
  .sidenav {padding-top: 15px;}
  .sidenav a {font-size: 18px;}
}
</style>
<script>
function openNav() {
    document.getElementById("mySidenav").style.width = "250px";
   // document.getElementById("main").style.marginLeft = "250px";

  document.getElementById("cover").style.display = "block";
}

function closeNav() {
    document.getElementById("mySidenav").style.width = "0";
    document.getElementById("main").style.marginLeft= "0";
   document.getElementById("cover").style.display = "none";
}
</script>