我的網站在桌面上顯示正常，但在手機螢幕上顯示不正常
我使用 HTML/CSS 設計我的個人網站。但文字並沒有縮放到手機上。請參考下面的圖。
桌面上的網站看起來很棒，但在行動裝置上顯示效果不佳。
手機顯示
我的Google驅動器嵌入甚至不適合手機螢幕顯示。 手機顯示 GGD PDF 嵌入
我該怎麼做才能解決這個問題？非常感謝。
下面是我的程式碼：
HTML
<!DOCTYPE html>
<html>
<head>
<title>EXAMPLE</title>
<meta charset="UTF-8"
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="author" content="Hoa Dang">
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;700&display=swap" rel="stylesheet">
<link rel="stylesheet" href="css/main.css">
<link rel="stylesheet" href="css/projects.css">
<link rel="stylesheet" href="css/nav.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.2.1/css/all.min.css">
<link rel="shortcut icon" type="image/x-icon" href="EXAMPLE"/>
<link rel="manifest" href="manifest.json">
<style>
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;700&display=swap');
</style>
</head>
<body>
<nav>
<input type="checkbox" id="chk">
<label for="chk" class="show-menu-btn">
<i class="fas fa-bars"></i>
</label>
<ul id="nav-ul">
<li class="nav-li">
<a class="nav-link selected">HOME</a>
</li>
<li class="nav-li">
<a class="nav-link">ABOUT</a>
</li>
<li class="nav-li">
<a class="nav-link">CV</a>
</li>
<li class="nav-li">
<a class="nav-link">PROJECTS</a>
</li>
<label for="chk" class="hide-menu-btn">
<i class="fas fa-times"></i>
</label>
</ul>
</nav>
<div id="HOME">
<div class="center">
<h1 id="main-header">EXAMPLE</h1>
<h3 id="sub-header">example.com <span class="green-detail">&</span> example.com</h3>
</div>
</div>
<div id="CV">
<div class="center">
<iframe src="example.com" width="640" height="480" allow="autoplay"></iframe>
</div>
</div>
<div id="PROJECTS" class="center">
<div id="img-container"></div>
</div>
<div id="ABOUT">
<div class="center">
<h2 id="about-header">example.comE<span class="green-detail">:</span></h2>
<p id="about-text">
<br> Text
<br> <br>
</p>
</div>
</div>
<footer>
<ul id="sm-ul">
<li class="sm-li">
<a class="sm-logo" href="example.com" target="_blank">
<i class="fab fa-youtube"></i>
</a>
</li>
<li class="sm-li">
<a class="sm-logo" href="example.com" target="_blank">
<i class="fab fa-instagram"></i>
</a>
</li>
<li class="sm-li">
<a class="sm-logo" href="example.com" target="_blank">
<i class="fab fa-facebook"></i>
</a>
</li>
<li class="sm-li">
<a class="sm-logo" href="example.com" target="_blank">
<i class="fab fa-linkedin"></i>
</a>
</li>
</ul>
</footer>
</body>
</html>
CSS
#* { padding: 0; margin: 0; }
:root {
--base-color: #d2dae2;
--secondary-color: #0be811;
}
body {
background-color: #1e272e;
font-family: 'DM Sans', sans-serif;
color: var(--base-color);
overflow: scroll;
}
body::before{
content: '';
position: absolute;
top: 0px;
right: 0px;
bottom: 0px;
left: 0px;
background-image: url("example.com");
background-size: cover;
background-position: top-center;
opacity: 0.2;
filter: blur(7px);
}
nav, footer, #about-text, #contact-container {
width: 100%;
}
nav {
margin-top: -30px;
position: fixed;
top: 0;
text-align: right;
z-index: 2;
}
footer {
position: fixed;
bottom: 0;
padding: 5vh;
}
#about-text, #sub-header {
font-size: 2.3vh;
line-height: 1.6;
font-weight:400;
}
#main-header, #sub-header {
text-align: center;
}
#main-header {
font-size: 8.5vh;
}
#nav-ul {
padding-right: 5vh;
}
#sm-ul, #nav-ul {
list-style-type: none;
}
#about-header {
font-size: 4vh;
font-weight: bold;
}
.center, #contact-container {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
z-index: 0;
}
.sm-logo {
color: var(--base-color);
font-size: 3vh;
transition: 0.2s ease-in;
}
.sm-logo:hover, .nav-link:hover, .nav-link.selected, .green-detail {
color: var(--secondary-color);
}
.sm-li {
display: inline-block;
margin-left: 5vh;
}
.nav-link {
font-size: 1.8vh;
cursor: pointer;
text-decoration: none;
transition: 0.2s ease-in;
}
.nav-li {
display: inline-block;
margin: 5vh 5vh 0 0;
}
@media screen and (max-width: 650px) {
nav, footer, #nav-top, #nav-ul, .nav-link {
padding: 0;
margin: 0;
}
#sm-ul, #nav-ul {
text-align: center;
}
.sm-li {
margin: 0 2vh 5vh 2vh;
}
.nav-li {
margin: 5vh 2vh 0 2vh;
}
}