圆角按钮

HTML 代码就这么简单：

<a href="#" class="button green">button</a><a href="#" class="button blue">button</a><a href="#" class="button gray">button</a>

如果没有 CSS ，那么上面的 HTML 执行起来是这样的：

开始 CSS3 的编写：

.button {display: inline-block;position: relative;margin: 10px;padding: 0 20px;text-align: center;text-decoration: none;font: bold 12px/25px Arial, sans-serif;}

一些不同颜色的按钮样式：

.green {color: #3e5706;background: #a5cd4e;}/* Blue Color */.blue {color: #19667d;background: #70c9e3;}/* Gray Color */.gray {color: #515151;background: #d3d3d3;}

到这一步后按钮看起来是这样的：

接下来开始用 CSS 处理圆角：

.button {display: inline-block;position: relative;margin: 10px;padding: 0 20px;text-align: center;text-decoration: none;font: bold 12px/25px Arial, sans-serif;text-shadow: 1px 1px 1px rgba(255,255,255, .22);-webkit-border-radius: 30px;-moz-border-radius: 30px;border-radius: 30px;-webkit-box-shadow: 1px 1px 1px rgba(0,0,0, .29), inset 1px 1px 1px rgba(255,255,255, .44);-moz-box-shadow: 1px 1px 1px rgba(0,0,0, .29), inset 1px 1px 1px rgba(255,255,255, .44);box-shadow: 1px 1px 1px rgba(0,0,0, .29), inset 1px 1px 1px rgba(255,255,255, .44);-webkit-transition: all 0.15s ease;-moz-transition: all 0.15s ease;-o-transition: all 0.15s ease;-ms-transition: all 0.15s ease;transition: all 0.15s ease;}

现在的按钮圆润多了，看看：

还不够啊，没有立体效果，再完善完善：

/* Green Color */.green {color: #3e5706;background: #a5cd4e; /* Old browsers */background: -moz-linear-gradient(top,  #a5cd4e 0%, #6b8f1a 100%); /* FF3.6+ */background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#a5cd4e), color-stop(100%,#6b8f1a)); /* Chrome,Safari4+ */background: -webkit-linear-gradient(top,  #a5cd4e 0%,#6b8f1a 100%); /* Chrome10+,Safari5.1+ */background: -o-linear-gradient(top,  #a5cd4e 0%,#6b8f1a 100%); /* Opera 11.10+ */background: -ms-linear-gradient(top,  #a5cd4e 0%,#6b8f1a 100%); /* IE10+ */background: linear-gradient(top,  #a5cd4e 0%,#6b8f1a 100%); /* W3C */}/* Blue Color */.blue {color: #19667d;background: #70c9e3; /* Old browsers */background: -moz-linear-gradient(top,  #70c9e3 0%, #39a0be 100%); /* FF3.6+ */background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#70c9e3), color-stop(100%,#39a0be)); /* Chrome,Safari4+ */background: -webkit-linear-gradient(top,  #70c9e3 0%,#39a0be 100%); /* Chrome10+,Safari5.1+ */background: -o-linear-gradient(top,  #70c9e3 0%,#39a0be 100%); /* Opera 11.10+ */background: -ms-linear-gradient(top,  #70c9e3 0%,#39a0be 100%); /* IE10+ */background: linear-gradient(top,  #70c9e3 0%,#39a0be 100%); /* W3C */}/* Gray Color */.gray {color: #515151;background: #d3d3d3; /* Old browsers */background: -moz-linear-gradient(top,  #d3d3d3 0%, #8a8a8a 100%); /* FF3.6+ */background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#d3d3d3), color-stop(100%,#8a8a8a)); /* Chrome,Safari4+ */background: -webkit-linear-gradient(top,  #d3d3d3 0%,#8a8a8a 100%); /* Chrome10+,Safari5.1+ */background: -o-linear-gradient(top,  #d3d3d3 0%,#8a8a8a 100%); /* Opera 11.10+ */background: -ms-linear-gradient(top,  #d3d3d3 0%,#8a8a8a 100%); /* IE10+ */background: linear-gradient(top,  #d3d3d3 0%,#8a8a8a 100%); /* W3C */}

现在爽了，漂亮了，你喜欢这样的按钮吗？

为了让按钮更大一点，我们增加了个 big 样式：

<a href="#" class="button big green">sign in <span>One minute</span></a><a href="#" class="button big blue">sign in <span>One minute</span></a><a href="#" class="button big gray">sign in <span>One minute</span></a>

/* Big Button Style */.big {padding: 0 40px;padding-top: 10px;height: 45px;text-transform: uppercase;font: bold 20px/22px Arial, sans-serif;}.big span {display: block;text-transform: none;font: italic normal 12px/18px Georgia, sans-serif;text-shadow: 1px 1px 1px rgba(255,255,255, .12);}

大按钮的效果：

我们还需要处理下当鼠标移到按钮上方时显示不同的效果：

.button:hover {-webkit-box-shadow: 1px 1px 1px rgba(0,0,0,.29), inset 0px 0px 2px rgba(0,0,0, .5);-moz-box-shadow: 1px 1px 1px rgba(0,0,0,.29), inset 0px 0px 2px rgba(0,0,0, .5);box-shadow: 1px 1px 1px rgba(0,0,0,.29), inset 0px 0px 2px rgba(0,0,0, .5);}.button:active {-webkit-box-shadow: inset 0px 0px 3px rgba(0,0,0, .8);-moz-box-shadow: inset 0px 0px 3px rgba(0,0,0, .8);box-shadow: inset 0px 0px 3px rgba(0,0,0, .8);}

效果如下：

好了，完美的CSS3按钮解决方案。