I am making a solar system website in pure code with no images used. The problem is that I can't figure out how to get stars in the background. I'm trying to get something like a yellow spread-out polka dot pattern on a black background. This is my code (repeat div and styling for every other planet).

```css
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);
  }
}
```

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