如何使此 CSS 模式显示在所有其他元素后面

Question

从 http://enjoycss.com/我使用一种模式来制作一个背景网格，比如这个

    .gradient-pattern {
  -webkit-box-sizing: content-box;
  -moz-box-sizing: content-box;
  box-sizing: content-box;
  width: 8.5in;
  height: 11in;
  border: none;
  font: normal 100%/normal Arial, Helvetica, sans-serif;
  color: rgba(255,255,255,1);
  -o-text-overflow: clip;
  text-overflow: clip;
  background: -webkit-linear-gradient(90deg, rgba(209,209,209,1) 0, #FFFFFF 2px, rgba(0,0,0,0) 2px, rgba(0,0,0,0) 100%), -webkit-linear-gradient(0deg, rgba(209,209,209,1) 0, #FFFFFF 2px, rgba(0,0,0,0) 2px, rgba(0,0,0,0) 100%), -webkit-linear-gradient(90deg, rgba(209,209,209,1) 0, rgba(255,255,255,0.298039) 1px, rgba(0,0,0,0) 1px, rgba(0,0,0,0) 100%), -webkit-linear-gradient(0deg, rgba(209,209,209,1) 0, rgba(255,255,255,0.298039) 1px, rgba(0,0,0,0) 1px, rgba(0,0,0,0) 100%), rgba(255,255,255,1);
  background: -moz-linear-gradient(0deg, rgba(209,209,209,1) 0, #FFFFFF 2px, rgba(0,0,0,0) 2px, rgba(0,0,0,0) 100%), -moz-linear-gradient(90deg, rgba(209,209,209,1) 0, #FFFFFF 2px, rgba(0,0,0,0) 2px, rgba(0,0,0,0) 100%), -moz-linear-gradient(0deg, rgba(209,209,209,1) 0, rgba(255,255,255,0.298039) 1px, rgba(0,0,0,0) 1px, rgba(0,0,0,0) 100%), -moz-linear-gradient(90deg, rgba(209,209,209,1) 0, rgba(255,255,255,0.298039) 1px, rgba(0,0,0,0) 1px, rgba(0,0,0,0) 100%), rgba(255,255,255,1);
  background: linear-gradient(0deg, rgba(209,209,209,1) 0, #FFFFFF 2px, rgba(0,0,0,0) 2px, rgba(0,0,0,0) 100%), linear-gradient(90deg, rgba(209,209,209,1) 0, #FFFFFF 2px, rgba(0,0,0,0) 2px, rgba(0,0,0,0) 100%), linear-gradient(0deg, rgba(209,209,209,1) 0, rgba(255,255,255,0.298039) 1px, rgba(0,0,0,0) 1px, rgba(0,0,0,0) 100%), linear-gradient(90deg, rgba(209,209,209,1) 0, rgba(255,255,255,0.298039) 1px, rgba(0,0,0,0) 1px, rgba(0,0,0,0) 100%), rgba(255,255,255,1);
  background-position: -2px -2px, -2px -2px, -1px -1px, -1px -1px;
  -webkit-background-origin: padding-box;
  background-origin: padding-box;
  -webkit-background-clip: border-box;
  background-clip: border-box;
  -webkit-background-size: 100px 100px, 100px 100px, 20px 20px, 20px 20px;
  background-size: 100px 100px, 100px 100px, 20px 20px, 20px 20px;
    }

但是，当我在页面上放置元素时，模式会掩盖元素（所有元素，例如文本，按钮等）

如何使此图案成为真实的背景？

我像这样将它设置在div 上，并将元素放在div 中。

<div class="gradient-pattern"></div>

Answer 1

我会

说，将相关设置分配给body标签：

body {
background: -webkit-linear-gradient(90deg, #FFFFFF 2px, rgba(0,0,0,0) 2px), -webkit-linear-gradient(0deg, #FFFFFF 2px, rgba(0,0,0,0) 2px), -webkit-linear-gradient(90deg, rgba(255,255,255,0.298039) 1px, rgba(0,0,0,0) 1px), -webkit-linear-gradient(0deg, rgba(255,255,255,0.298039) 1px, rgba(0,0,0,0) 1px), rgb(34, 102, 153);
  background: -moz-linear-gradient(0deg, #FFFFFF 2px, rgba(0,0,0,0) 2px), -moz-linear-gradient(90deg, #FFFFFF 2px, rgba(0,0,0,0) 2px), -moz-linear-gradient(0deg, rgba(255,255,255,0.298039) 1px, rgba(0,0,0,0) 1px), -moz-linear-gradient(90deg, rgba(255,255,255,0.298039) 1px, rgba(0,0,0,0) 1px), rgb(34, 102, 153);
  background: linear-gradient(0deg, #FFFFFF 2px, rgba(0,0,0,0) 2px), linear-gradient(90deg, #FFFFFF 2px, rgba(0,0,0,0) 2px), linear-gradient(0deg, rgba(255,255,255,0.298039) 1px, rgba(0,0,0,0) 1px), linear-gradient(90deg, rgba(255,255,255,0.298039) 1px, rgba(0,0,0,0) 1px), rgb(34, 102, 153);
  background-position: -2px -2px, -2px -2px, -1px -1px, -1px -1px;
  -webkit-background-origin: padding-box;
  background-origin: padding-box;
  -webkit-background-clip: border-box;
  background-clip: border-box;
  -webkit-background-size: 100px 100px, 100px 100px, 20px 20px, 20px 20px;
  background-size: 100px 100px, 100px 100px, 20px 20px, 20px 20px;
}