body {
    color: #000;
    background: #fff;
    font-family: 'PingFang SC','Helvetica Neue','Helvetica','Arial','Microsoft Yahei',sans-serif;
    font-size: 12px;
    min-height: 101%;
    background: url(https://images.cnblogs.com/cnblogs_com/tiantianlike/1849085/o_200917014352%E8%93%9D%E5%A5%B301.jpg) top center #cbdcec;
    background-size: 100% auto;
    background-attachment: fixed;
}
#home {
margin: 0 auto;
opacity: 0.82;
width: 65%;
min-width: 1080px;
background-color: #fff;
padding: 30px;
margin-top: 50px;
margin-bottom: 50px;
box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
}
/*添加按钮*/
.cnblogs-markdown pre {
  position: relative;
}
.cnblogs-markdown pre > span {
  position: absolute;
  top: 0;
  right: 0;
  border-radius: 2px;
  padding: 0 10px;
  font-size: 12px;
  background: rgba(0, 0, 0, 0.4);
  color: #fff;
  cursor: pointer;
  display:none;
}
.cnblogs-markdown pre:hover > span {
  display:block;
}
.cnblogs-markdown pre > .copyed {
  background: #67c23a;
}