*{
    margin: 0;
    padding:0;
}
/*给整个导航模块的父容器加一个外边距*/
.nav {
    margin: 10px;
}
/* 导航模块通用样式，ul li a 等 */
.nav ul,.nav li{
    list-style: none;
}
.nav a{
    text-decoration: none;
}

/*主导航栏样式*/
.category {
    position: relative;
    width: 200px;
    background: #c7171e;
    border-bottom: 1px dotted #de272e;

}


.category>.cate-title,.category>.icon {
    color: #fff;
    font-size: 14px;
}

.category>.cate-title{
    display: block; /*行内元素上下padding不会生效*/
    padding: 10px;
    margin: 0 10px;
}
.category>.icon{
    position: absolute;
    top: 10px;
    right: 10px;
}
/* 子列表样式 */
.subcategory{
    width: 210px;
    position: absolute;
    left: 200px;
    top: 0;
    border: 1px solid #ccc;
    font-size: 12px;
    display: none;
}
.subcategory li{
    float: left;
    width: 55px;
    padding: 10px 20px;
}
.subcategory a{
    color: #444;
}

.active {
    display: block;
}