CSS3--圆角按钮，无图片

.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;
}

颜色处理

/* 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 */
}

  效果:

 

加大号的按钮

/* 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);
}

 效果

  最后加入鼠标移入效果

.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);
}

 

原地址：http://www.open-open.com/home/space-37924-do-blog-id-5789.html