页面的head部分比较简单，三种颜色的按钮共用了一个.btn样式，代码如下：

.container {
	margin-top: 108px;
	text-align: center;
}
div {
	margin: 18px auto;
}
.btn {
	display:inline-block;
	border:none;
	border-radius:.3em;
	box-shadow:inset 0 0 0 1px rgba(0,0,0,0.1),inset 0 -0.25em 0 rgba(0,0,0,0.25),0 0.25em 0.25em rgba(0,0,0,0.05);
	color:#fff;
	cursor:pointer;
	font-family:'Microsoft YaHei','Lantinghei SC','Open Sans',Arial,'Hiragino Sans GB','STHeiti','WenQuanYi Micro Hei','SimSun',sans-serif;
	font-weight:300;
	line-height:1.5;
	letter-spacing:1px;
	padding:.5em 1.5em .75em;
	position:relative;
	text-decoration:none;
	text-shadow:0 1px 1px rgba(255,255,255,0.25);
	vertical-align:middle;
	-webkit-user-select:none;
	-moz-user-select:none;
	-ms-user-select:none;
	user-select:none;
}
.btn:active {
	outline:none;
	box-shadow:inset 0 0 0 1px rgba(0,0,0,0.2),inset 0 2px 0 rgba(255,255,255,0.1),inset 0 0.25em 0.5em rgba(0,0,0,0.05);
	margin-top:.25em;
	padding-bottom:.5em;
}
.btn--blue {
	background-color:#3498db;
}
.btn--green {
	background-color:#1abc9c;
}
.btn--red {
	background-color:#e65d4f;
}
.btn--lg {
	font-size:1.5em;
}
.btn--df {
	font-size:1.25em;
}
.btn--md {
	font-size:1em;
}
.btn--sm {
	font-size:0.75em;
}

页面的body部分，需要将三类不同颜色的按钮放置在不同的div容器里，代码结构如下：

<div class="container">
    <!--梦幻蓝-->
    <div>
        <a class="btn btn--lg btn--blue" href="#">瘦身成人</a>
        <a class="btn btn--df btn--blue" href="#">丰满诱人</a>
        <a class="btn btn--md btn--blue" href="#">清秀迷人</a>
        <a class="btn btn--sm btn--blue" href="#">小鸟依人</a>
    </div>

    <!--清新绿-->
    <div>
        <a class="btn btn--lg btn--green" href="#">瘦身成人</a>
        <a class="btn btn--df btn--green" href="#">丰满诱人</a>
        <a class="btn btn--md btn--green" href="#">清秀迷人</a>
        <a class="btn btn--sm btn--green" href="#">小鸟依人</a>
    </div>

    <!--中国红-->
    <div>
        <a class="btn btn--lg btn--red" href="#">瘦身成人</a>
        <a class="btn btn--df btn--red" href="#">丰满诱人</a>
        <a class="btn btn--md btn--red" href="#">清秀迷人</a>
        <a class="btn btn--sm btn--red" href="#">小鸟依人</a>
    </div>
</div>