How to use pure CSS to animate the sun and the Earth and the moon's motion model

Source: Internet
Author: User
This article brings you to the content is about how to use pure CSS to achieve the sun and the Earth and the moon's running model animation, there is a certain reference value, the need for friends can refer to, I hope to help you.

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To define the DOM, the container contains 3 elements:

<div class= "Container" >    <div class= "Sun" ></div>    <div class= "Earth" >        <div Class= "Moon" ></div>    </div></div>

Center display:

body {    margin:0;    HEIGHT:100VH;    Display:flex;    Align-items:center;    Justify-content:center;    Background-color:black;}

Define Container Dimensions:

. container {    font-size:10px;    Width:40em;    Height:40em;    Position:relative;}

Draw the Sun:

. Sun {    position:absolute;    top:15em;    left:15em;    Width:10em;    Height:10em;    Background-color:yellow;    border-radius:50%;    box-shadow:0 0 3em White;}

Draw the path of the Earth and the moon:

. Earth,.moon  {    position:absolute;    Border-style:solid;    Border-color:white transparent transparent transparent;    Border-width:0.1em 0.1em 0 0;    border-radius:50%;}. Earth {    top:5em;    left:5em;    Width:30em;    Height:30em;}. Moon {    top:0;    right:0;    Width:8em;    Height:8em;}

Plot the Earth and the moon with pseudo-elements:

. earth::before,.moon::before {    position:absolute;    border-radius:50%;   Content: ';}. Earth::before {    top:2.8em;    right:2.5em;    Height:3em;    Width:3em;    Background-color:aqua;}. Moon::before {    top:0.8em;    Right:0.2em;     Width:1.2em;    Height:1.2em;    Background-color:silver;}

To set the animation effect of running:

/* Rotation period 365.2422 days */.earth {    animation:orbit 36.5s linear infinite;   } /* Rotation period 27.322 days */.moon {    animation:orbit 2.7s linear Infinite;} @keyframes Orbit {to    {        transform:rotate (360deg);    }}

Finally, hide the parts that might appear outside the container:

body {    Overflow:hidden;}


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