html - 当输入文本太长时，工具提示框看起来很奇怪

Question

我们有一个工具提示框，其 css 如下:

.radioButton-tooltip
 {
    position: absolute;
    width: 205px;
    padding: 5px 20px 5px 35px;
    left: 100%;
    margin-left: -17px;
    font-size: 13px;
    background: url(images/tooltip.png) 0 center no-repeat;
    color: #ffffff;
    display: none;
    text-align:left;
    z-index:100;

}
 .radioButton-tooltip:before, .radioButton-tooltip:after, .radioButton-tooltip .before, .radioButton-tooltip .after 
 {
    content: '';
    background-image: url(images/tooltip.png);
    background-repeat: no-repeat;
    height: 10px;
    width: 100%;
    display: block;
    position: absolute;
    left: 0;
    z-index:100;
}

.radioButton-tooltip:before,  .radioButton-tooltip .before
{
    background-position: 0 top;
    top: -10px;
    z-index:100;
}

.radioButton-tooltip:after, .radioButton-tooltip .after
{
    background-position: 0 bottom;
    bottom: -10px;
    z-index:100;
}

正常情况下，它工作正常。如图:

但是，当文本变得很长时，它看起来如下:

我不太清楚这是怎么引起的，但我假设这是因为文本太长，超过了原始 tooltip.png 的最大长度。但问题是我应该如何解决这个问题？

谢谢。

Answer 1

我建议对此使用纯 CSS，不要乱用图像拼接/ Sprite 。这是一项相当古老的技术。

.tool-tip {
  left: 40px;
  position: relative;
  background: rgba(0,0,0,0.75);
  border-radius: 10px;
  border: 3px solid #fff;
  box-shadow: 0 0 3px 1px rgba(0,0,0,0.3);
  padding: 15px;
  max-width: 250px;
  color: #fff;
  font: normal 100% Arial, sans-serif;
}
.tool-tip:after, .tool-tip:before {
  position: absolute;
  left: -15px;
  top: calc(50% - 15px);
  content: "";
  display: block;
  width: 0;
  height: 0;
  width: 0; 
  height: 0; 
}
.tool-tip:after {
  border-top: 15px solid transparent;
  border-bottom: 15px solid transparent;
  border-right: 15px solid #444;
}
/*.tool-tip:before {
  top: calc(50% - 18px);
  left: -21px;
  border-top: 18px solid transparent;
  border-bottom: 18px solid transparent;
  border-right: 18px solid #fff;
}*/

.tool-tip:first-child {
  margin-bottom: 25px;
}

<div class="tool-tip">
  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Maecenas eu lorem sit amet erat pellentesque gravida. Cras scelerisque, lorem a feugiat blandit, risus eros interdum orci, non aliquet dui ex a ipsum. 
</div>

<div class="tool-tip">
  Lorem ipsum dolor sit amet, consectetur adipiscing elit.
</div>