/* 把我们所有标签的内外边距清零 */
* {
    margin: 0;
    padding: 0;
    /* css3盒子模型 */
    box-sizing: border-box;
}

/* em 和 i 斜体的文字不倾斜 */
em,
i {
    font-style: normal
}

/* 去掉li 的小圆点 */
li {
    list-style: none
}

img {
    /* border 0 照顾低版本浏览器 如果 图片外面包含了链接会有边框的问题 */
    border: 0;
    /* 取消图片底侧有空白缝隙的问题 */
    vertical-align: middle
}

button {
    /* 当我们鼠标经过button 按钮的时候，鼠标变成小手 */
    cursor: pointer
}

a {
    color: #666;
    text-decoration: none
}

a:hover {
    color: #c81623
}

button,
input {
    /* "\5B8B\4F53" 就是宋体的意思 这样浏览器兼容性比较好 */
    font-family: Microsoft YaHei, Heiti SC, tahoma, arial, Hiragino Sans GB, "\5B8B\4F53", sans-serif;
    /* 默认有灰色边框我们需要手动去掉 */
    border: 0;
    outline: none;
}

body {
    /* CSS3 抗锯齿形 让文字显示的更加清晰 */
    -webkit-font-smoothing: antialiased;
    background-color: #fff;
    font: 12px/1.5 Microsoft YaHei, Heiti SC, tahoma, arial, Hiragino Sans GB, "\5B8B\4F53", sans-serif;
    color: #666
}

.hide,
.none {
    display: none
}

/* 清除浮动 */
.clearfix:after {
    visibility: hidden;
    clear: both;
    display: block;
    content: ".";
    height: 0
}

/* .clearfix {
    *zoom: 1
} */

@font-face {
    font-family: 'icomoon';
    src: url('../fonts/icomoon.eot?kx0ydd');
    src: url('../fonts/icomoon.eot?kx0ydd#iefix') format('embedded-opentype'),
        url('../fonts/icomoon.ttf?kx0ydd') format('truetype'),
        url('../fonts/icomoon.woff?kx0ydd') format('woff'),
        url('../fonts/icomoon.svg?kx0ydd#icomoon') format('svg');
    font-weight: normal;
    font-style: normal;
    font-display: block;
}


/* 头部样式 */
.header-area {
    position: sticky;
    top: 0;
    width: 100%;
    border-bottom: 1px solid rgba(250, 250, 250, 0.2);
    background-color: #f8f9fa;
    /* 添加不透明背景色 */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.header-area .container {
    margin: 0 auto;
    width: 1300px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* 导航栏样式 */
.header-area .main-nav {
    display: flex;
    align-items: center;
    width: 100%;
    justify-content: space-between;
}

.header-area .logo {
    font-size: 24px;
    font-weight: bold;
    color: black;
    text-decoration: none;
}

.header-area .nav {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.header-area .nav li {
    margin: 0 20px;
}

.header-area .nav a {
    text-decoration: none;
    color: black;
    font-size: 16px;
    padding: 10px 20px;
    transition: background-color 0.3s;
}

.header-area .nav a:hover,
.header-area .nav a.active {
    /* color: #798095; */
    color: #fff;
    background-color: hsl(225, 12%, 53%, .7);
    border-radius: 5px;
}