CSS3 mouse slides over animated line border special effects

Based on CSS property animation, the effect is smooth and flexible

Effect display http://hovertree.com/texiao/css3/32/

Source code download:
http: //hovertree.com/h/bjaf/fo1jlmhi.htm

The rendering is as follows:


The code is as follows:

<span style="color: #0000ff;"><!</span><span style="color: #ff00ff;">doctype html</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">html</span><span style="color: #0000ff;">></span>
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<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">charset</span><span style="color: #0000ff;">="utf-8"</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="renderer"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="webkit"</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="X-UA-Compatible"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="IE=Edge"</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">meta </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="viewport"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no"</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>CSS3鼠标滑过动画线条边框特效 - 何问起<span style="color: #0000ff;"></</span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">base </span><span style="color: #ff0000;">target</span><span style="color: #0000ff;">="_blank"</span> <span style="color: #0000ff;">/></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">link </span><span style="color: #ff0000;">rel</span><span style="color: #0000ff;">="stylesheet"</span><span style="color: #ff0000;"> href</span><span style="color: #0000ff;">="http://hovertree.com/texiao/css3/32/css/index.css"</span> <span style="color: #0000ff;">/></span>

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        <span style="color: #0000ff;"><</span><span style="color: #800000;">h4</span><span style="color: #0000ff;">></span>谜语是中华民族历史悠久的文化<span style="color: #0000ff;"></</span><span style="color: #800000;">h4</span><span style="color: #0000ff;">></span>
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