增加背景图片
css
content {
background-image: url(/* your image, http(s) or file protocol */);
background-repeat: repeat;
background-position: -52px;
}
#write {
margin-top: 24px;
background-color: rgba(255, 255, 255, 0.68);
margin-bottom: 24px;
min-height: calc(100% - 48px);
}
body {
background-color: #8F9D9A;
}
/**Other CSS to adjuest UI components*/
效果如下图:

图1
参考,参数可以慢慢调整