This article introduces to you how to use CSS to achieve the dynamic effect of color-changing rotation animation. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
Definition of dom, container Contains 9 elements:
Centered display:
body { margin: 0; height: 100vh; display: flex; align-items: center; justify-content: center; background-color: black; }
Define the container size:
.container { width: 30em; height: 30em; font-size: 12px; }
Set the style of the lines in the container:
.container { color: lime; } .container span { position: absolute; width: 5em; height: 5em; border-style: solid; border-width: 1em 1em 0 0; border-color: currentColor transparent; border-radius: 50%; }
Let the lines Display in the center of the container:
.container { display: flex; align-items: center; justify-content: center; }
Define variables to gradually extend the line from the center to the outside:
.container span { --diameter: calc(5em + (var(--n) - 1) * 3em); width: var(--diameter); height: var(--diameter); } .container span:nth-child(1) { --n: 1; } .container span:nth-child(2) { --n: 2; } .container span:nth-child(3) { --n: 3; } .container span:nth-child(4) { --n: 4; } .container span:nth-child(5) { --n: 5; } .container span:nth-child(6) { --n: 6; } .container span:nth-child(7) { --n: 7; } .container span:nth-child(8) { --n: 8; } .container span:nth-child(9) { --n: 9; }
Set the animation effect to rotate the line:
.container span { animation: rotating linear infinite; animation-duration: calc(5s / (9 - var(--n) + 1)); } @keyframes rotating { to { transform: rotate(1turn); } }
Define the color change The animation effect is based on 360 degrees of the hue circle as 100%. The --percent variable refers to the position of 100%:
@keyframes change-color { 0%, 100% { --percent: 0; } 10% { --percent: 10; } 20% { --percent: 20; } 30% { --percent: 30; } 40% { --percent: 40; } 50% { --percent: 50; } 60% { --percent: 60; } 70% { --percent: 70; } 80% { --percent: 80; } 90% { --percent: 90; } }
Finally, apply the color-changing animation effect to the container:
.container { --deg: calc(var(--percent) / 100 * 360deg); color: hsl(var(--deg), 100%, 50%); animation: change-color 5s linear infinite; }
Done!
Recommended related articles:
How to use CSS and D3 to achieve the dynamic effect of a spaceship
How to use CSS and D3 to achieve endless six The effect of edge space
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