动画进度条与css [英] Animated progress bar with css

问题描述

我希望进度条在2秒内从0％宽度变为50％宽度。这是我的代码到目前为止：

I want the progress bar to go from 0% width to 50% width in 2 seconds. This is my code so far:

<style>  
  #progressbar {
      background-color: #000000;
      border-radius: 8px;
      padding: 3px;
      width: 400px;
    }

    #progressbar div {
       background-color: #0063C6;
       height: 10px;
       border-radius: 5px;
       animation:loadbar 2s;
        -webkit-animation:loadbar 2s;
    }

    @keyframes loadbar {

    0% {
        width: 0%;
    }

    100% {
        width: 50%;
    }

    @-webkit-keyframes loadbar {

    0% {
        width: 0%;
    }

    100% {
        width: 50%;
    }

}
</style>

<div id="progressbar">
    <div></div>
</div>

但是当我打开页面时，宽度是100％，而不是50％。我做错了什么？

but when I open the page the width is 100% instead of 50%. what have I done wrong?

推荐答案

您的loadbar动画未关闭。动画现在应该工作。我还添加了一个转发关键字，只播放一次动画。

Your loadbar animation was not closed. The animation should work now. I've also added a forwards keyword to only play the animation once.

#progressbar {
  background-color: black;
  border-radius: 8px;
  padding: 3px;
  width: 400px;
}

#progressbar div {
  background-color: #0063C6;
  height: 10px;
  border-radius: 5px;
  animation:loadbar 2s normal forwards ease-in-out;
  -webkit-animation:loadbar 2s normal forwards ease-in-out;
}

@keyframes loadbar {

  0% {
    width: 0%;
  }

  100% {
    width: 100%;
  }
}
@-webkit-keyframes loadbar {

  0% {
    width: 0%;
  }

  100% {
    width: 100%;
  }

}

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