body {
    background:url("https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTDVxmww9nyU_OSgXEX7aNqBQhThk7c4zpO3w&s");  /*背景图片链接*/
    background-position:center left;
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment:fixed;
}

#div_digg{
  padding: 5px;
  border-radius: 5px;
  position: fixed;
  left: 26px;
  bottom: 80px;
  width:80px;
  z-index:100;
}
.diggit{
  background: url(https://images2017.cnblogs.com/blog/894443/201709/894443-20170920105433618-867225449.png) no-repeat;
  width: 60px;
  height: 60px;
}
#div_digg .diggnum{
  position: absolute;
  bottom: -20px;
  left: 20px;
  background: #D0D0D0;
  padding: 2px 0;
  display: block;
  color: #555;
  font-size: 12px;
  text-align: center;
  width: 60px;
  -moz-border-radius: 4px;
  -webkit-border-radius: 4px;
  font-weight: bold;
}
/* 删除反对按钮,有点邪恶了 */
 .buryit{
   display: none;
 }

 /* 定制返回顶部按键 */
#back-to-top {
    background-color: #87cefe;
    bottom: 20px;
    box-shadow: 0 0 6px #bdc3c7;
    color: #444444;
    padding: 10px 10px;
    position: fixed;
    right: 50px;
    cursor: pointer;
    border-radius: 30px;
}