Solar system made with HTML, CSS, and pure Javascript

Solar system made with HTML, CSS, and pure Javascript

This code is an HTML and CSS animation that displays a solar system model consisting of the sun, earth, moon, and Mars.

FULL CODE

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<!DOCTYPE html>
<html>
<body>
  <div class="container">
    <div class="sun">
      <div class="planet-name" data-name="Sun">Sun</div>
    </div>
    <div class="earth">
      <div class="planet-name" data-name="Earth">Earth</div>
      <div class="moon">
        <div class="planet-name" data-name="Moon">Moon</div>
      </div>
    </div>
    <div class="mars">
      <div class="planet-name" data-name="Mars">Mars</div>
    </div>
  </div>
</body>
</html>
body {
    margin: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: black;
    overflow: hidden;
}
.container {
    font-size: 10px;
    width: 40em;
    height: 40em;
    position: relative;
}
.sun {
    position: absolute;
    top: 15em;
    left: 15em;
    width: 10em;
    height: 10em;
    background-color: yellow;
    border-radius: 50%;
    box-shadow: 0 0 3em white;
}
.earth,.moon,.mars {
    position: absolute;
    border-style: solid;
    border-color: white transparent transparent transparent;
    border-width: 0.1em 0.1em 0 0;
    border-radius: 50%;
}
.earth {
    top: 4em;
    left: 4em;
    width: 32em;
    height: 32em; 
    animation: orbit 36.5s linear infinite;   
}
.moon {
    top: 0;
    right: 0;
    width: 8em;
    height: 8em; 
    animation: orbit 2.7s linear infinite;
}
.mars {
    top: 11em;
    left: 11em;
    width: 18em;
    height: 18em;
    animation: orbit 68.7s linear infinite;
}
.earth::before,
.moon::before,
.mars::before {
    content: '';
    position: absolute;
    border-radius: 50%;
}
.earth::before {
    top: 2.8em;
    right: 2.8em;
    width: 3em;
    height: 3em;
    background-color: aqua;    
}
.moon::before {
    top: 0.8em;
    right: 0.2em;
    width: 1.2em;
    height: 1.2em;
    background-color: silver;
}
.mars::before {
    top: 1.5em;
    right: 1.5em;
    width: 2em;
    height: 2em;
    background-color: red;
}
@keyframes orbit {
    to {
        transform: rotate(360deg);
    }
}
.star {
    position: absolute;
    background-color: white;
    border-radius: 50%;
}
.planet-name {
    display: none;
    position: absolute;
    color: white;
    font-size: 1.2em;
}
.sun:hover::after,
.earth:hover::after,
.moon:hover::after,
.mars:hover::after {
    content: attr(data-name);
    position: absolute;
    color: white;
    font-size: 1.2em;
    top: -1.5em; /* change bottom to top and adjust the value */
    left: 50%;
    transform: translateX(-50%);
}
function createStars() {
      const container = document.querySelector('.container');
      for (let i = 0; i < 1000; i++) { // Increase the number of stars to 1000
        const star = document.createElement('div');
        star.className = 'star';
        star.style.width = '1px';
        star.style.height = '1px';
        star.style.top = Math.random() * 100 + '%';
        star.style.left = Math.random() * 100 + '%';
        container.appendChild(star);
      }
    }
    createStars();This

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