html – 在CSS中创建星空背景

我正在使用纯代码制作太阳能系统网站,不使用任何图像.问题是我无法弄清楚如何在后台获得星星.我试图在黑色背景上得到类似黄色展开的波尔卡圆点图案.这是我的代码(为每个其他星球重复div和样式).

html,body {
  width: 100%;
  height: 100%;
  background-color: black;
}
#sun {
  position: absolute;
  top: 50%;
  left: 50%;
  height: 200px;
  width: 200px;
  margin-top: -100px;
  margin-left: -100px;
  border-color: orange;
  border-width: 2px;
  border-style: solid;
  border-radius: 50%;
  Box-shadow: 0 0 64px yellow;
  background-color: yellow;
}
#mercury {
  position: absolute;
  top: 0;
  left: 50%;
  height: 10px;
  width: 10px;
  margin-left: -5px;
  margin-top: -5px;
  border-radius: 50%;
  background-color: #ffd9b3;
}
#mercury-orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 260px;
  height: 260px;
  margin-top: -130px;
  margin-left: -130px;
  border-width: 2px;
  border-style: dotted;
  border-color: white;
  border-radius: 50%;
  -webkit-animation: spin-right 22s linear infinite;
  -moz-animation: spin-right 22s linear infinite;
  -ms-animation: spin-right 22s linear infinite;
  -o-animation: spin-right 22s linear infinite;
  animation: spin-right 22s linear infinite;
}
@-webkit-keyframes spin-right {
  100% {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
@keyframes spin-right {
  100% {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

<div id="sun"></div>
<div id="mercury-orbit">
  <div id="mercury"></div>
</div>

解决方法

从 this开始,星光灿烂的夜晚.

background-color:black;
background-image:
radial-gradient(white,rgba(255,255,.2) 2px,transparent 40px),radial-gradient(white,.15) 1px,transparent 30px),.1) 2px,radial-gradient(rgba(255,.4),transparent 30px);
background-size: 550px 550px,350px 350px,250px 250px,150px 150px; 
background-position: 0 0,40px 60px,130px 270px,70px 100px;