body {
    color: 
    #000;
    background-color: #e6e6e6;
    font-family: "Helvetica Neue",Helvetica,Verdana,Arial,sans-serif;
    font-size: 12px;
    min-height: 101%;
    background: url(https://img2020.cnblogs.com/blog/1886543/202010/1886543-20201013222202791-461643476.png)fixed;
    background-position: center;
    background-size: 1800px;
}
#home {
opacity: 0.75;
    margin: 0 auto;
        margin-top: 0px;
        margin-bottom: 0px;
    width: 65%;
    min-width: 950px;
    background-color: 
#fff;
padding: 30px;
margin-top: 50px;
margin-bottom: 50px;
box-shadow: 0 2px 6px
    rgba(100,100,100,.3);

}

font-family: Consolas, Monaco,monospace,Noto Sans,微软雅黑;