时间:2021-07-01 10:21:17 帮助过:34人阅读
每日前端实战系列的全部源代码请从 github 下载:
https://github.com/comehope/front-end-daily-challenges
定义 dom,容器中包含 8 个子元素:
- <div class="coil">
- <span></span>
- <span></span>
- <span></span>
- <span></span>
- <span></span>
- <span></span>
- <span></span>
- <span></span>
- </div>
居中显示:
- body {
- margin: 0;
- height: 100vh;
- display: flex;
- align-items: center;
- justify-content: center;
- background: radial-gradient(circle at center, midnightblue, black);
- }
画出纹香盘要用的框线:
- .coil {
- position: relative;
- display: flex;
- justify-content: center;
- }
- .coil span {
- position: absolute;
- width: calc((var(--n) * 2 - 1) * 1em);
- height: calc((var(--n) - 0.5) * 1em);
- border: 1em solid darkgreen;
- }
- .coil span:nth-child(1) {
- --n: 1;
- }
- .coil span:nth-child(2) {
- --n: 2;
- }
- .coil span:nth-child(3) {
- --n: 3;
- }
- .coil span:nth-child(4) {
- --n: 4;
- }
- .coil span:nth-child(5) {
- --n: 5;
- }
- .coil span:nth-child(6) {
- --n: 6;
- }
- .coil span:nth-child(7) {
- --n: 7;
- }
- .coil span:nth-child(8) {
- --n: 8;
- }
把一半框线放置到上方:
- .coil span:nth-child(odd) {
- align-self: flex-end;
- }
删除掉上方框线的下边框,和下方框线的上边框:
- .coil span:nth-child(odd) {
- border-bottom: none;
- }
- .coil span:nth-child(even) {
- border-top: none;
- }
对齐上下边框:
- .coil span:nth-child(even) {
- transform: translateX(-1em);
- }
把边框改为曲线:
- .coil span:nth-child(odd) {
- border-radius: 50% 50% 0 0 / 100% 100% 0 0;
- }
- .coil span:nth-child(even) {
- border-radius: 0 0 50% 50% / 0 0 100% 100%;
- }
用伪元素画出蚊香最中间的部分:
- .coil::before {
- content: '';
- position: absolute;
- width: 1em;
- height: 1em;
- background-color: darkgreen;
- border-radius: 50%;
- left: -1.5em;
- top: -0.5em;
- }
用伪元素画出蚊香的燃点:
- .coil::after {
- content: '';
- position: absolute;
- width: 1em;
- height: 1em;
- border-radius: 50%;
- top: -0.5em;
- background-color: darkred;
- left: -9.5em;
- z-index: -1;
- transform: scale(0.9);
- box-shadow: 0 0 1em white;
- }
最后,为燃点增加闪动的效果:
- .coil::after {
- animation: blink 1s linear infinite alternate;
- }
- @keyframes blink {
- to {
- box-shadow: 0 0 0 white;
- }
- }
大功告成!
以上就是如何使用纯CSS实现蚊香燃烧的效果(附源码)的详细内容,更多请关注Gxl网其它相关文章!