_blogs/add_css.js

 $('#ifame').css({
        backgroundImage:'url(https://www.gitinn.com/pan-chinese/_blogs/raw/master/img/'+parseInt(Math.random()*11+1)+'.png)',
    })
 
 
 
    $('input[placeholder="请输入内容"]').attr('id','search').attr('autocomplete','off');
     setTimeout(function () {
        $('#search').focus(function(){
            $(this).attr('placeholder','')
        }).blur(function () {
            $(this).attr('placeholder','请输入内容')
        });
    },300)
     
     $('.Body_val>h1').text('').text('欢迎来到Hopeの我的blog');
 
 $('head').after(`
    <style>


    body{
    overflow: hidden;
    }

 #search::-webkit-input-placeholder{
    color: #999;
    }


     #ifame{
        position: absolute;
        min-width: 1200px;
        width: 100%;
        height: 100%;
        background-color: transparent;
        background-size: cover;
        background-position: center center;
        background-repeat: no-repeat;
        overflow-y:scroll;
        overflow-x:hidden;
}


#ifame::-webkit-scrollbar{
      width: 5px;
      height: 8px;
      }
     #ifame::-webkit-scrollbar-button{
      width: 0px;
      height: 0px;
      }
      #ifame::-webkit-scrollbar-thumb{

      width: 5px;
      height: 8px;
background-color: rgb(53, 185, 149);
      }

    </style>
    `)