這篇文章帶給大家的內容是關於如何使用純CSS實現傳統蚊香燃燒的效果(附源碼),有一定的參考價值,有需要的朋友可以參考一下,希望對你有所幫助。
每日前端實戰系列的完整原始程式碼請從github 下載:
https://github.com/comehope/front-end-daily-challenges
定義dom,容器包含8 個子元素:
<div> <span></span> <span></span> <span></span> <span></span> <span></span> <span></span> <span></span> <span></span> </div>
居中顯示:
body { margin: 0; height: 100vh; display: flex; align-items: center; justify-content: center; background: radial-gradient(circle at center, midnightblue, black); }
畫出紋香盤要用的框線:
.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; }
把一半框線放在上方:
.coil span:nth-child(odd) { align-self: flex-end; }
刪除掉上方框線的下邊框,和下方框線的上邊框:
.coil span:nth-child(odd) { border-bottom: none; } .coil span:nth-child(even) { border-top: none; }
對齊上下邊框:
.coil span:nth-child(even) { transform: translateX(-1em); }
把邊框改為曲線:
.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%; }
用偽元素畫出蚊香最中間的部分:
.coil::before { content: ''; position: absolute; width: 1em; height: 1em; background-color: darkgreen; border-radius: 50%; left: -1.5em; top: -0.5em; }
用偽元素畫出蚊香的燃點:
.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; }
最後,為燃點增加閃爍的效果:
.coil::after { animation: blink 1s linear infinite alternate; } @keyframes blink { to { box-shadow: 0 0 0 white; } }
大功告成!
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