html - 使用 CSS3 动画加速闪烁计时器

Question

我正在构建一个带有计时器(从 10 秒到 0 秒)的测验应用程序。当时间量接近 0 时，我希望我的文字闪烁得越来越快。当计时器大约为 10 秒时，我希望在剩余时间较少时减少 2 秒的过渡时间。

有没有办法用 CSS3 解决这个问题？

Answer 1

你可以设置不同关键帧的动画，并将每个关键帧的持续时间设置得越来越短

div {
    font-size: 40px;
    -webkit-animation: blink 10s 2s;
    animation: blink 10s 2s;
}

@-webkit-keyframes blink {
    0%  {color: blue;}
   10%  {color: yellow;}
   20%  {color: blue;}
   29%  {color: yellow;}
   38%  {color: blue;}
   46%  {color: yellow;}
   54%  {color: blue;}
   61%  {color: yellow;}
   68%  {color: blue;}
   74%  {color: yellow;}
   80%  {color: blue;}
   85%  {color: yellow;}
   90%  {color: blue;}
   92%  {color: yellow;}
   94%  {color: blue;}
   96%  {color: yellow;}
   98%  {color: blue;}
  100%  {color: yellow;}
 }

@keyframes blink {
    0%  {color: blue;}
   10%  {color: yellow;}
   20%  {color: blue;}
   29%  {color: yellow;}
   38%  {color: blue;}
   46%  {color: yellow;}
   54%  {color: blue;}
   61%  {color: yellow;}
   68%  {color: blue;}
   74%  {color: yellow;}
   80%  {color: blue;}
   85%  {color: yellow;}
   90%  {color: blue;}
   92%  {color: yellow;}
   94%  {color: blue;}
   96%  {color: yellow;}
   98%  {color: blue;}
  100%  {color: yellow;}
 }

<div>TEST</div>