按慣例先上一張展示圖片
要實(shí)現(xiàn)自定義隨機(jī)圖片即在后臺(tái)【頁(yè)面定制css代碼】添加一段簡(jiǎn)短的代碼即可
body {
background-color: #efefef;
background-image: url(http://lorempixel.com/1600/900);
background-repeat: no-repeat;
background-attachment: fixed;
background-position: center 0;
background-size: cover;
}