构建简洁之美：我的第一个前端页面

实现界面效果

1. HTML示例代码

html 复制代码

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" type="text/css" href="css/styles.css" />
    <title>示例主页</title>
</head>
<body>

<header>
    <h1>示例页面</h1>
</header>

<div class="navbar">
    <a href="#home">主页</a>
    <div class="dropdown">
        <button class="dropbtn">文件选择 
            <i class="fa fa-caret-down"></i>
        </button>
        <div class="dropdown-content">
            <a href="#">打开文件</a>
            <a href="#">保存文件</a>
            <a href="#">另存为...</a>
        </div>
    </div> 
    <div class="dropdown">
        <button class="dropbtn">功能函数 
            <i class="fa fa-caret-down"></i>
        </button>
        <div class="dropdown-content">
            <a href="#">计算</a>
            <a href="#">排序</a>
            <a href="#">过滤</a>
        </div>
    </div> 
</div>

<div class="content">
    <h2>欢迎来到示例主页</h2>
    <p>这是一个带有下拉菜单的导航栏示例。</p>
</div>

</body>
</html>

2. CSS示例代码

css 复制代码

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}
header {
    background-color: #4CAF50;
    color: white;
    text-align: center;
    padding: 1em 0;
}
.navbar {
    background-color: #333;
    overflow: hidden;
    display: flex;
    justify-content: center;
}
.navbar a, .dropdown .dropbtn {
    float: left;
    display: block;
    color: white;
    text-align: center;
    padding: 14px 20px;
    text-decoration: none;
    font-size: 16px; /* 设置字体大小 */
}
.dropdown {
    float: left;
    overflow: hidden;
}
.dropdown .dropbtn {
    border: none;
    outline: none;
    color: white;
    padding: 14px 16px;
    background-color: inherit;
    font-family: inherit;
    margin: 0;
}
.navbar a:hover, .dropdown:hover .dropbtn {
    background-color: #575757;
}
.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
}
.dropdown-content a {
    float: none;
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    text-align: left;
}
.dropdown-content a:hover {
    background-color: #ddd;
}
.dropdown:hover .dropdown-content {
    display: block;
}
.content {
    padding: 16px;
    text-align: center;
}