body {
    font-family: -apple-system,SF UI Text,Arial,PingFang SC,Hiragino Sans GB,Microsoft YaHei,WenQuanYi Micro Hei,sans-serif;
    font-size: 18px;
    background: #e6e6e6 
 url(//images.cnblogs.com/cnblogs_com/willvi624/1269412/o_CjN0m1gmfbOAOn8ZACdG6G2mG4E579.jpg) no-repeat top center fixed;
}
#home {
    margin: 0 auto;
    opacity: 0.95;
    box-shadow: 0 0 10px #000;
    width: 79%;
    min-width: 950px;
    background-color: #fff;
    padding: 30px;
    margin-top: 50px;
    margin-bottom: 50px;
    box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
}
.git-link {
    position: absolute;
    top: 50px;
    right: 170px;
    z-index: 1;
}