#cas{position: fixed; top:0; left: 0; z-index:-1; opacity:0.8;}  
#cnblogs_post_body
{
    color: black;      
    font: 0.875em/1.5em "微软雅黑" , "PTSans" , "Arial" ,sans-serif;
    font-size: 15px;
}
#各个等级标题的颜色样式
#cnblogs_post_body h1    {
    background: #2B6695;
    border-radius: 6px 6px 6px 6px;
    box-shadow: 0 0 0 1px #5F5A4B, 1px 1px 6px 1px rgba(10, 10, 0, 0.5);
    color: #FFFFFF;
    font-family: "微软雅黑" , "宋体" , "黑体" ,Arial;
    font-size: 23px;
    font-weight: bold;
    height: 25px;
    line-height: 25px;
    margin: 18px 0 !important;
    padding: 8px 0 5px 5px;
    text-shadow: 2px 2px 3px #222222;
}
#cnblogs_post_body h2    {
    background: #008eb7;
    border-radius: 6px 6px 6px 6px;
    box-shadow: 0 0 0 1px #5F5A4B, 1px 1px 6px 1px rgba(10, 10, 0, 0.5);
    color: #FFFFFF;
    font-family: "微软雅黑" , "宋体" , "黑体" ,Arial;
    font-size: 20px;
    font-weight: bold;
    height: 25px;
    line-height: 25px;
    margin: 18px 0 !important;
    padding: 8px 0 5px 5px;
    text-shadow: 2px 2px 3px #222222;
}
#cnblogs_post_body h3    {
    background: #399ab2;
    border-radius: 6px 6px 6px 6px;
    box-shadow: 0 0 0 1px #5F5A4B, 1px 1px 6px 1px rgba(10, 10, 0, 0.5);
    color: #FFFFFF;
    font-family: "微软雅黑" , "宋体" , "黑体" ,Arial;
    font-size: 18px;
    font-weight: bold;
    height: 25px;
    line-height: 25px;
    margin: 18px 0 !important;
    padding: 8px 0 5px 5px;
    text-shadow: 2px 2px 3px #222222;
}
#cnblogs_post_body h4{
    background: #2B6600;
    border-radius: 6px 6px 6px 6px;
    box-shadow: 0 0 0 1px #5F5A4B, 1px 1px 6px 1px rgba(10, 10, 0, 0.5);
    color: #FFFFFF;
    font-family: "微软雅黑" , "宋体" , "黑体" ,Arial;
    font-size: 16px;
    font-weight: bold;
    height: 24px;
    line-height: 23px;
    margin: 12px 0 !important;
    padding: 5px 0 5px 10px;
    text-shadow: 2px 2px 3px #222222;
}
#页面中a标签鼠标位置
#cnblogs_post_body h2:a{
   color: rgb(235, 235, 235);
}
#cnblogs_post_body h2 a:hover{
   color: rgb(255, 102, 0);
}
#页面中标题位置
#cnblogs_post_body h1{
   color: rgb(235, 235, 235);
}
#cnblogs_post_body h1:hover{
   color: rgb(255, 102, 0);
}
#cnblogs_post_body h2{
   color: rgb(235, 235, 235);
}
#cnblogs_post_body h2:hover{
   color: rgb(255, 102, 0);
}
#cnblogs_post_body h3{
   color: rgb(235, 235, 235);
}
#cnblogs_post_body h3:hover{
   color: rgb(255, 102, 0);
}
#cnblogs_post_body h4{
   color: rgb(235, 235, 235);
}
#cnblogs_post_body h4:hover{
   color: rgb(255, 102, 0);
}
 <canvas id="cas"></canvas>

<script type="text/javascript" src="https://cdn.bootcss.com/canvas-nest.js/1.0.1/canvas-nest.min.js"></script>
<script>
 //返回顶部
     $('#back-to-top').click(function(e){ $('html,body').animate({scrollTop:0}, 500) });
 $(function(){
     changeIndReadCommentStyle();

    

     //滑稽~
     $('#ad_t2').remove();
     $('#under_post_news').remove();
     $('#under_post_kb').remove();
     $('.c_ad_block').remove();
     $('.c_ad_block').remove();
     $('#blog-calendar').remove();
     $('#sidebar_search').remove();
     $('title').html($('title').html())
 });
 // 修改首页 阅读、评论样式
 function changeIndReadCommentStyle(){   
     var count = $('.postDesc').length;
     var pattern = new RegExp("阅读(.*?)<a");
     for (var i=0; i < count; i++){
         var html = "";
         var txt = pattern.exec($('.postDesc').eq(i).html());
         html += "<span class=\"glyphicon glyphicon-eye-open\"></span>";
         html += "  " + txt;
         $('.postDesc').eq(i).html(html);
     }
 }
 </script>

<canvas id="cas"></canvas>
        <script type="text/javascript" src="https://blog-static.cnblogs.com/files/dxqNet/Background.js"> </script>