body,
p,
h1,
h2,
h3,
h4,
h5,
h6,
ul,
ol,
dl,
li,
dt,
dd {
    /* 默认有边距，都要清除 */
    margin: 0;
    padding: 0;
    font-family: "Microsoft Yahei", sans-serif;
    color: #ccc;
    /* 去掉列表的原点 */
    list-style: none;
    /* 默认鼠标 */
    cursor: default;
}

/*可选*/
html,
body {
    width: 100%;
    height: 100%;
}

/* 使用伪元素清除浮动 */
.clearfix::before,
.clearfix::after {
    content: "";
    height: 0;
    line-height: 0;
    display: block;
    visibility: none;
    clear: both;
}

.clearfix {
    *zoom: 1;
}