css - 带箭头的纯 CSS 工具提示

Question

我有这个:

span {
    padding: 10px;
    display: inline;
}

[title]:hover::before {
    background: #333;
    top: 20%;
    background: rgba(0,0,0,.8);
    border-radius: 5px;
    color: #fff;
    content: attr(title);
    padding: 5px 15px;
    position: absolute;
    z-index: 98;
    width: auto;
}

<span class="dijitButtonContents" id="saveButton" title="Save as draft"><span id="saveButton_label">Save</span></span>

我需要像这样添加一个指向箭头:

谁能帮助我仅使用伪元素来实现这一点？

谢谢。

Answer 1

像这样？

span {
  padding: 10px;
  display: inline;
}

[title] {
  position: relative;
}

[title]:hover:before {
  background: #333;
  top: 100%;
  background: rgba(0, 0, 0, .8);
  border-radius: 5px;
  color: #fff;
  content: attr(title);
  padding: 5px 15px;
  position: absolute;
  z-index: 98;
  width: auto;
  margin-top: 10px;
}

[title]:hover:after {
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-bottom: 10px solid #333;
  content: ' ';
  position: absolute;
  top: 100%;
  left: 50%;
}

<span class="dijitButtonContents" id="saveButton" title="Save as draft"><span id="saveButton_label">Save</span></span>