半盒不透明度（带文字和背景）

Question

是否可以使用css或其他内容来执行此操作

Answer 1

是的，在父div上使用渐变：

.my-div {
  width: 50%;
  color: white;
  /* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#4c4c4c+0,595959+12,666666+25,474747+39,2c2c2c+50,000000+51,111111+60,2b2b2b+76,1c1c1c+91,131313+100;Black+Gloss+%231 */
  /* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#45484d+0,000000+100;Black+3D+%231 */
  background: #45484d; /* Old browsers */
  background: -moz-linear-gradient(top,  #45484d 0%, #000000 100%); /* FF3.6-15 */
  background: -webkit-linear-gradient(top,  #45484d 0%,#000000 100%); /* Chrome10-25,Safari5.1-6 */
  background: linear-gradient(to bottom,  #45484d 0%,#000000 100%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#45484d', endColorstr='#000000',GradientType=0 ); /* IE6-9 */

}

.my-div p {
  color:black;
}

和html：

<div class="my-div">
  Some text
  <p>
    Other text
  </p>
</div>

整个事情在一起：

＆＃13;

＆＃13;

/* Styles go here */

.my-div {
  width: 50%;
  color: white;
  /* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#4c4c4c+0,595959+12,666666+25,474747+39,2c2c2c+50,000000+51,111111+60,2b2b2b+76,1c1c1c+91,131313+100;Black+Gloss+%231 */
  /* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#45484d+0,000000+100;Black+3D+%231 */
  background: #45484d; /* Old browsers */
  background: -moz-linear-gradient(top,  #45484d 0%, #000000 100%); /* FF3.6-15 */
  background: -webkit-linear-gradient(top,  #45484d 0%,#000000 100%); /* Chrome10-25,Safari5.1-6 */
  background: linear-gradient(to bottom,  #45484d 0%,#000000 100%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#45484d', endColorstr='#000000',GradientType=0 ); /* IE6-9 */

}

.my-div p {
  color:black;
}

＆＃13;

<div class="my-div">
      Some text
      <p>
        Other text
      </p>
    </div>

＆＃13;

＆＃13;

＆＃13;

这是plunkr。

Answer 2

修改

这似乎有效，但我不确定x-browser兼容性：https://jsfiddle.net/owaduvy8/1/

编辑结束

是的，或带有渐变的叠加层：

https://jsfiddle.net/6uox1an7/1/

.text-container {
  position: relative;
  width: 200px;
  height: 130px;
  background-color: black;
}

p {
  color: white;
}