这是一款非常有特点的CSS3按钮，按钮的背景不是北京图片，也不是单纯的颜色，而是一组魔幻般的冒泡背景动画。当我们将鼠标滑过按钮时，按钮的冒泡背景动画就可以展示出来。可以说这款CSS3按钮的设计风格相当有创意，而且令人惊叹的是，这些动画都是用CSS3实现的，并没有使用JavaScript，非常强大。
HTML代码：
<div id="buttonContainer"> <a href="#" class="button big blue">Big Button</a> <a href="#" class="button big green">Big Button</a> <a href="#" class="button big orange">Big Button</a> <a href="#" class="button big gray">Big Button</a> <a href="#" class="button blue medium">Medium Button</a> <a href="#" class="button green medium">Medium Button</a> <a href="#" class="button orange medium">Medium Button</a> <a href="#" class="button gray medium">Medium Button</a> <a href="#" class="button small blue">Small Button</a> <a href="#" class="button small green">Small Button</a> <a href="#" class="button small blue rounded">Rounded</a> <a href="#" class="button small orange">Small Button</a> <a href="#" class="button small gray">Small Button</a> <a href="#" class="button small green rounded">Rounded</a></div>
CSS代码：
.button{ font:15px Calibri, Arial, sans-serif; /* A semi-transparent text shadow */
text-shadow:1px 1px 0 rgba(255,255,255,0.4); /* Overriding the default underline styling of the links */
text-decoration:none !important; white-space:nowrap; display:inline-block; vertical-align:baseline; position:relative; cursor:pointer; padding:10px 20px; background-repeat:no-repeat; /* The following two rules are fallbacks, in case
the browser does not support multiple backgrounds. */
background-position:bottom left; background-image:url('button_bg.png'); /* Multiple backgrounds version. The background images
are defined individually in color classes */
background-position:bottom left, top right, 0 0, 0 0; background-clip:border-box; /* Applying a default border raidus of 8px */
-moz-border-radius:8px; -webkit-border-radius:8px; border-radius:8px; /* A 1px highlight inside of the button */
-moz-box-shadow:0 0 1px #fff inset; -webkit-box-shadow:0 0 1px #fff inset; box-shadow:0 0 1px #fff inset; /* Animating the background positions with CSS3 */
/* Currently works only in Safari/Chrome */
-webkit-transition:background-position 1s; -moz-transition:background-position 1s; transition:background-position 1s;
}.button:hover{ /* The first rule is a fallback, in case the browser
does not support multiple backgrounds
*/
background-position:top left; background-position:top left, bottom right, 0 0, 0 0;
}.button:active{ /* Moving the button 1px to the bottom when clicked */
bottom:-1px;
}/* The three buttons sizes */.button.big { font-size:30px;}.button.medium { font-size:18px;}.button.small { font-size:13px;}/* A more rounded button */.button.rounded{ -moz-border-radius:4em; -webkit-border-radius:4em; border-radius:4em;
}/* Defining four button colors *//* BlueButton */.blue.button{ color:#0f4b6d !important; border:1px solid #84acc3 !important; /* A fallback background color */
background-color: #48b5f2; /* Specifying a version with gradients according to */
background-image: url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient( center bottom, circle,
rgba(89,208,244,1) 0,rgba(89,208,244,0) 100px), -moz-linear-gradient(#4fbbf7, #3faeeb); background-image: url('button_bg.png'), url('button_bg.png'), -webkit-gradient( radial, 50% 100%, 0, 50% 100%, 100,
from(rgba(89,208,244,1)), to(rgba(89,208,244,0))), -webkit-gradient(linear, 0% 0%, 0% 100%, from(#4fbbf7), to(#3faeeb));
}.blue.button:hover{ background-color:#63c7fe; background-image: url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient( center bottom, circle,
rgba(109,217,250,1) 0,rgba(109,217,250,0) 100px), -moz-linear-gradient(#63c7fe, #58bef7); background-image: url('button_bg.png'), url('button_bg.png'), -webkit-gradient( radial, 50% 100%, 0, 50% 100%, 100,
from(rgba(109,217,250,1)), to(rgba(109,217,250,0))), -webkit-gradient(linear, 0% 0%, 0% 100%, from(#63c7fe), to(#58bef7));
}/* Green Button */.green.button{ color:#345903 !important; border:1px solid #96a37b !important;
background-color: #79be1e; background-image:url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient(center bottom, circle, rgba(162,211,30,1) 0,rgba(162,211,30,0) 100px),-moz-linear-gradient(#82cc27, #74b317); background-image:url('button_bg.png'), url('button_bg.png'), -webkit-gradient(radial, 50% 100%, 0, 50% 100%, 100, from(rgba(162,211,30,1)), to(rgba(162,211,30,0))),-webkit-gradient(linear, 0% 0%, 0% 100%, from(#82cc27), to(#74b317));
}.green.button:hover{ background-color:#89d228; background-image:url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient(center bottom, circle, rgba(183,229,45,1) 0,rgba(183,229,45,0) 100px),-moz-linear-gradient(#90de31, #7fc01e); background-image:url('button_bg.png'), url('button_bg.png'), -webkit-gradient(radial, 50% 100%, 0, 50% 100%, 100, from(rgba(183,229,45,1)), to(rgba(183,229,45,0))),-webkit-gradient(linear, 0% 0%, 0% 100%, from(#90de31), to(#7fc01e));
}/* Orange Button */.orange.button{ color:#693e0a !important; border:1px solid #bea280 !important;
background-color: #e38d27; background-image:url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient(center bottom, circle, rgba(232,189,45,1) 0,rgba(232,189,45,0) 100px),-moz-linear-gradient(#f1982f, #d4821f); background-image:url('button_bg.png'), url('button_bg.png'), -webkit-gradient(radial, 50% 100%, 0, 50% 100%, 100, from(rgba(232,189,45,1)), to(rgba(232,189,45,0))),-webkit-gradient(linear, 0% 0%, 0% 100%, from(#f1982f), to(#d4821f));
}.orange.button:hover{ background-color:#ec9732; background-image:url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient(center bottom, circle, rgba(241,192,52,1) 0,rgba(241,192,52,0) 100px),-moz-linear-gradient(#f9a746, #e18f2b); background-image:url('button_bg.png'), url('button_bg.png'), -webkit-gradient(radial, 50% 100%, 0, 50% 100%, 100, from(rgba(241,192,52,1)), to(rgba(241,192,52,0))),-webkit-gradient(linear, 0% 0%, 0% 100%, from(#f9a746), to(#e18f2b));
}.gray.button{ color:#525252 !important; border:1px solid #a5a5a5 !important;
background-color: #a9adb1; background-image:url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient(center bottom, circle, rgba(197,199,202,1) 0,rgba(197,199,202,0) 100px),-moz-linear-gradient(#c5c7ca, #92989c); background-image:url('button_bg.png'), url('button_bg.png'), -webkit-gradient(radial, 50% 100%, 0, 50% 100%, 100, from(rgba(197,199,202,1)), to(rgba(197,199,202,0))),-webkit-gradient(linear, 0% 0%, 0% 100%, from(#c5c7ca), to(#92989c));
}.gray.button:hover{ background-color:#b6bbc0; background-image:url('button_bg.png'), url('button_bg.png'), -moz-radial-gradient(center bottom, circle, rgba(202,205,208,1) 0,rgba(202,205,208,0) 100px),-moz-linear-gradient(#d1d3d6, #9fa5a9); background-image:url('button_bg.png'), url('button_bg.png'), -webkit-gradient(radial, 50% 100%, 0, 50% 100%, 100, from(rgba(202,205,208,1)), to(rgba(202,205,208,0))),-webkit-gradient(linear, 0% 0%, 0% 100%, from(#d1d3d6), to(#9fa5a9));
}本文链接：http://www.codeceo.com/article/css3-button-bubble-animation.html本文作者：码农网 – 小峰