基于css属性animation动画制作，效果流畅弹性十足
效果展示 http://hovertree.com/texiao/css3/32/
源码下载：
http://hovertree.com/h/bjaf/fo1jlmhi.htm
效果图如下：
代码如下：
doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="renderer" content="webkit">
<meta http-equiv="X-UA-Compatible" content="IE=Edge">
<meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no">
<title>CSS3鼠标滑过动画线条边框特效 - 何问起title>
<base target="_blank" />
<link rel="stylesheet" href="http://hovertree.com/texiao/css3/32/css/index.css" />
head>
<body>
<div class="service">
<div class="service-list">
<ul class="clearfix" id="J_service_container">
<li> <a href="http://hovertree.com/tiku/">
<div class="item-box">
<h3>何问起题库h3>
<h4>Web前端，HTML5，Java，C#，CSS等等h4>
<h4>考试，面试复习h4>
<h4>知识自测h4>
<div class="overlay-start">div>
<div class="overlay-bottom">div>
<div class="overlay-left">div>
<div class="overlay-top">div>
<div class="overlay-right">div>
<div class="start-point"> <i class="circle">i> div>
div>
<div class="service-icon">
<div class="circle">+div>
div>
a> li>
<li> <a href="http://hovertree.com/h/bjaf/l3c6nm7b.htm">
<div class="item-box">
<h3>何问起键盘h3>
<h4>用电脑键盘弹电子琴h4>
<h4>学习音乐好工具h4>
<h4>没事弹小曲h4>
<div class="overlay-start">div>
<div class="overlay-bottom">div>
<div class="overlay-left">div>
<div class="overlay-top">div>
<div class="overlay-right">div>
<div class="start-point"> <i class="circle">i> div>
div>
<div class="service-icon">
<div class="circle">+div>
div>
a> li>
<li> <a href="http://m.hovertree.com/">
<div class="item-box">
<h3>何问起谜语h3>
<h4>谜语是中华民族历史悠久的文化h4>
<h4>锻炼思维h4>
<h4>一点一点落实（字）h4>
<div class="overlay-start">div>
<div class="overlay-bottom">div>
<div class="overlay-left">div>
<div class="overlay-top">div>
<div class="overlay-right">div>
<div class="start-point"> <i class="circle">i> div>
div>
<div class="service-icon">
<div class="circle">+div>
div>
a> li>
<li> <a href="http://hovertree.com/">
<div class="item-box">
<h3>何问起h3>
<h4>想问候不知从何问起h4>
<h4>就直接说喜欢你h4>
<h4>们h4>
<div class="overlay-start">div>
<div class="overlay-bottom">div>
<div class="overlay-left">div>
<div class="overlay-top">div>
<div class="overlay-right">div>
<div class="start-point"> <i class="circle">i> div>
div>
<div class="service-icon">
<div class="circle">+div>
div>
a> li>
<li> <a href="http://keleyi.com/">
<div class="item-box">
<h3>柯乐义h3>
<h4>木可柯h4>
<h4>乐意为您服务h4>
<h4>天长地久h4>
<div class="overlay-start">div>
<div class="overlay-bottom">div>
<div class="overlay-left">div>
<div class="overlay-top">div>
<div class="overlay-right">div>
<div class="start-point"> <i class="circle">i> div>
div>
<div class="service-icon">
<div class="circle">+div>
div>
a> li>
<li> <a href="http://hovertree.com/hovertreescj/">
<div class="item-box">
<h3>HoverTreeSCJh3>
<h4>C#.NET Sql Serverh4>
<h4>何问起收藏夹h4>
<h4>WinFormh4>
<div class="overlay-start">div>
<div class="overlay-bottom">div>
<div class="overlay-left">div>
<div class="overlay-top">div>
<div class="overlay-right">div>
<div class="start-point"> <i class="circle">i> div>
div>
<div class="service-icon">
<div class="circle">+div>
div>
a> li>
ul>
div>
div>
<div class="hovertreeinfo">
<p>适用浏览器：FireFox、Chrome、Opera、Edge、搜狗、世界之窗. 不支持Safari、IE8及以下浏览器。p>
<p>来源：<a href="http://hovertree.com/" target="_blank">何问起a> <a href="http://hovertree.com/menu/texiao/">网页特效a>
<a href="http://hovertree.com/h/bjaf/vphj0rrw.htm">代码说明a>p>
div>
body>
html>
转自：http://hovertree.com/h/bjaf/vphj0rrw.htm
特效汇总：http://www.cnblogs.com/jihua/p/webfront.html
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