html - 我如何将鼠标悬停在标签上传和提交按钮上以更改背景和文本

Question

我使用此代码是因为设计上传和提交按钮不使用 jquery 或 Javascript。我需要在悬停时更改上传和提交按钮的背景颜色和文本颜色。这是代码:JS Fiddle

* {
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
}
.inputBtnSection {
  display: inline-block;
  vertical-align: top;
  font-size: 0;
  font-family: verdana;
}
.disableInputField {
  display: inline-block;
  vertical-align: top;
  height: 27px;
  margin: 0;
  font-size: 14px;
  padding: 0 3px;
}
.fileUpload {
  position: relative;
  overflow: hidden;
  border: solid 1px gray;
  display: inline-block;
  vertical-align: top;
}
.fileUpload2 {
  position: relative;
  overflow: hidden;
  border: solid 1px gray;
  display: inline-block;
  vertical-align: top;
}
.uploadBtn {
  display: inline-block;
  vertical-align: top;
  background: rgba(0, 0, 0, 0.5);
  font-size: 14px;
  padding: 0 10px;
  height: 25px;
  line-height: 22px;
  color: #fff;
}
.uploadBtn2 {
  display: inline-block;
  vertical-align: top;
  background: rgba(0, 0, 0, 0.5);
  font-size: 14px;
  padding: 0 10px;
  height: 25px;
  line-height: 22px;
  color: #fff;
}
.fileUpload input.upload {
  top: 0;
  position: absolute;
  right: 0;
  margin: 0;
  padding: 0;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  filter: alpha(opacity=0);
}
.fileUpload2 input.submit {
  top: 0;
  position: absolute;
  right: 0;
  margin: 0;
  padding: 0;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  filter: alpha(opacity=0);
}

<div class="formulir">
  <form action="php/upload.php" method="post" enctype="multipart/form-data">
    <div class="inputBtnSection">

      <input id="uploadFile" class="disableInputField" placeholder="Choose File" disabled="disabled" />

      <label class="fileUpload">
        <input id="uploadBtn" type="file" class="upload" name="fileToUpload" />
        <span class="uploadBtn">Browse File</span>
      </label>
    </div>

    <label class="fileUpload2">
      <input id="uploadtn2" type="submit" value="Upload Image" name="submit" class="submit">
      <span class="uploadBtn2">upload</span>
    </label>

  </form>
</div>

Answer 1

这是 Fiddle

刚刚向元素添加了 :hover 类。

CSS:

.fileUpload:hover {
  background-color: rgba(0, 0, 256, 0.5);
  transition: all 0.25s;  
}

.fileUpload2:hover {
  background-color: green;
  transition: all 0.25s;
}