输入标记运行意外的CSS效果

Question

我正在尝试设计我的Drupal主题按钮的样式，但是当我把同样的CSS放到"input“标签中时出现了一些错误。

在这个代码片段示例中，我们可以用相同的CSS代码验证两种不同的效果。

我以为这是Drupal的问题，但事实并非如此。当我将代码放到外部并使用input标记进行尝试时，它显示了与Drupal站点中相同的方式。

​

/* Buttons */
.form-submit {
  cursor: pointer;
  margin-left: 5px;
  margin-bottom: 15px;
  text-shadow: 0 -2px 0 #4a8a65, 0 1px 1px #c2dece;
  box-sizing: border-box;
  font-size: 2em;
  font-family: Helvetica, Arial, Sans-Serif;
  text-decoration: none;
  font-weight: bold;
  color: #5ea97d;
  height: 65px;
  line-height: 65px;
  padding: 0 32.5px;
  display: inline-block;
  width: auto;
  background: -webkit-gradient(linear, left top, left bottom, from(#9ceabd), color-stop(26%, #9ddab6), to(#7fbb98));
  background: linear-gradient(to bottom, #9ceabd 0%, #9ddab6 26%, #7fbb98 100%);
  border-radius: 5px;
  border-top: 1px solid #c8e2d3;
  border-bottom: 1px solid #c2dece;
  top: 0;
  -webkit-transition: all 0.06s ease-out;
  transition: all 0.06s ease-out;
  position: relative;
}
.form-submit:visited {
  color: #5ea97d;
}

.form-submit:hover {
  background: -webkit-gradient(linear, left top, left bottom, from(#baf1d1), color-stop(26%, #b7e4ca), to(#96c7ab));
  background: linear-gradient(to bottom, #baf1d1 0%, #b7e4ca 26%, #96c7ab 100%);
}

.form-submit:active {
  top: 6px;
  text-shadow: 0 -2px 0 #7fbb98, 0 1px 1px #c2dece, 0 0 4px white;
  color: white;
}
.form-submit:active:before {
  top: 0;
  box-shadow: 0 3px 3px rgba(0, 0, 0, 0.7), 0 3px 9px rgba(0, 0, 0, 0.2);
}

.form-submit:before {
  display: inline-block;
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  z-index: -1;
  top: 6px;
  border-radius: 5px;
  height: 65px;
  background: linear-gradient(to top, #1e5033 0%, #378357 6px);
  -webkit-transition: all 0.078s ease-out;
  transition: all 0.078s ease-out;
  box-shadow: 0 1px 0 2px rgba(0, 0, 0, 0.3), 0 5px 2.4px rgba(0, 0, 0, 0.5), 0 10.8px 9px rgba(0, 0, 0, 0.2);
}

<input type="submit" id="edit-submit" name="op" value="Comprar" class="form-submit">
<a class="form-submit" href="#0">Comprar</a>

​

Answer 1

伪元素::before & ::after不能处理某些元素，比如输入。渲染的不同之处就在于此。该问题已经提出，我邀请您阅读此答案以了解更多详细信息。：https://stackoverflow.com/a/4660434

Answer 2

好吧，好吧..。我不是CSS专家，实际上我是一些自学成才的人，但我可以像下面的片段一样改进这个问题的解决方案。如果我们不能以特定的方式做某件事，我们就必须跳出框框，找到一种方法让它工作。如果不相等，但与预期的相似。有没有人能帮我把它做得更好？

​

/* Buttons */
.form-submit {
  /* :before */

  top: 6px;
  border-radius: 5px;
  height: 65px;
  background: linear-gradient(to top, #1e5033 0%, #378357 6px);
  /* -webkit-transition: all 0.078s ease-out; 
  transition: all 0.078s ease-out; */ 
  box-shadow: 0 1px 0 2px #9ddab6, 0 5px 2.4px #7fbb98, 0 8px 9px rgba(0, 0, 0, 0.2);
  
  cursor: pointer;
  margin-left: 5px;
  margin-bottom: 15px;
  text-shadow: 0 -2px 0 #4a8a65, 0 1px 1px #c2dece;
  box-sizing: border-box;
  font-size: 2em;
  font-family: Helvetica, Arial, Sans-Serif;
  text-decoration: none;
  font-weight: bold;
  color: #5ea97d;
  height: 65px;
  line-height: 65px;
  padding: 0 32.5px;
  display: inline-block;
  width: auto;
  background: -webkit-gradient(linear, left top, left bottom, from(#9ceabd), color-stop(26%, #9ddab6), to(#7fbb98));
  background: linear-gradient(to bottom, #9ceabd 0%, #9ddab6 26%, #7fbb98 100%);
  /* border-radius: 5px; */
  border-top: 1px solid #c8e2d3;
  border-bottom: 1px solid #c2dece;
  top: 0;
  -webkit-transition: all 0.06s ease-out;
  transition: all 0.06s ease-out;
  position: relative;
}


.form-submit:visited {
  color: #5ea97d;
}

.form-submit:hover {
  background: -webkit-gradient(linear, left top, left bottom, from(#baf1d1), color-stop(26%, #b7e4ca), to(#96c7ab));
  background: linear-gradient(to bottom, #baf1d1 0%, #b7e4ca 26%, #96c7ab 100%);
}

.form-submit:active {
  top: 6px;
  text-shadow: 0 -2px 0 #7fbb98, 0 1px 1px #c2dece, 0 0 4px white;
  color: white;
  box-shadow: 0 0px 0 2px rgba(0, 0, 0, 0.3), 0 0px 2.4px rgba(0, 0, 0, 0.5), 0 0px 9px rgba(0, 0, 0, 0.2);
}

<input type="submit" id="edit-submit" name="op" value="Comprar" class="form-submit">
<a class="form-submit" href="#0">Comprar</a>

​