为什么我的动画伪元素不能与输入元素一起使用?

问题描述 投票:3回答:2

我正在尝试模拟此处显示的按钮:https://codepen.io/nw/pen/udkIB

我正在尝试将我的动画添加到值按钮中,但不起作用。未显示下载箭头形状和下载nox形状。

这是我的代码:

.buttonDownload {
  display: inline-block;
  border: none;
  position: relative;
  padding: 10px 25px;
  background-color: #4CC713;
  color: white;
  font-family: sans-serif;
  text-decoration: none;
  font-size: 0.9em;
  text-align: center;
  text-indent: 15px;
}

.buttonDownload:hover {
  background-color: #333;
  color: white;
}

.buttonDownload:before,
.buttonDownload:after {
  content: ' ';
  display: block;
  position: absolute;
  left: 15px;
  top: 52%;
}


/* Download box shape  */

.buttonDownload:before {
  width: 10px;
  height: 2px;
  border-style: solid;
  border-width: 0 2px 2px;
}


/* Download arrow shape */

.buttonDownload:after {
  width: 0;
  height: 0;
  margin-left: 3px;
  margin-top: -7px;
  border-style: solid;
  border-width: 4px 4px 0 4px;
  border-color: transparent;
  border-top-color: inherit;
  -webkit-animation: downloadArrow 2s linear infinite;
  animation: downloadArrow 2s linear infinite;
  -webkit-animation-play-state: paused;
  animation-play-state: paused;
}

.buttonDownload:hover:before {
  border-color: #4CC713;
}

.buttonDownload:hover:after {
  border-top-color: #4CC713;
  -webkit-animation-play-state: running;
  animation-play-state: running;
}


/* keyframes for the download icon anim */

@-webkit-keyframes downloadArrow {
  /* 0% and 0.001% keyframes used as a hackish way of having the button frozen on a nice looking frame by default */
  0% {
    margin-top: -7px;
    opacity: 1;
  }
  0.001% {
    margin-top: -15px;
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    margin-top: 0;
    opacity: 0;
  }
}

@keyframes downloadArrow {
  /* 0% and 0.001% keyframes used as a hackish way of having the button frozen on a nice looking frame by default */
  0% {
    margin-top: -7px;
    opacity: 1;
  }
  0.001% {
    margin-top: -15px;
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    margin-top: 0;
    opacity: 0;
  }
}
<form action="" method="POST">
  <div class="g-recaptcha" data-sitekey="your_site_key"></div>
  <br/>
  <input type="submit" value="Download" class="buttonDownload">
</form>
html css css-animations submit-button
2个回答
4
投票

:before:after之类的伪元素不适用于任何<input>元素。在您的链接示例中,它有效,因为它使用了<a>

因此您将不得不替换此HTML:

<input type="submit" value="Download" class="buttonDownload">

带有此:

<button type="submit" class="buttonDownload">Download</button>

演示:https://jsfiddle.net/fL2e6t8o/


-1
投票

您的CSS有效,但定位的是<a>标签而不是<input>。将您的HTML更改为此:

<form action="www.indiananimeclan.blogspot. com" method="POST">
    <div class="g-recaptcha" data-sitekey="your_site_key"></div>
    <br/>
    <a href="#" class="buttonDownload">Download</a>
</form>

[Here's a pen,您的CSS不变。

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