So to edit a system file in html first you select the file you want to edit. I want to edit the iPadOS version from 16 to 17. To do that then go to files and find the file. If not then make the file using DeepSeek ai. Then download Runestone. Now go to the file you want to edit. Then change the file to look like this is html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>iOS 17 Simulation</title>
<style>
body {
margin: 0;
padding: 0;
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
background-color: #f2f2f7;
height: 100vh;
display: flex;
flex-direction: column;
overflow: hidden;
}
/* Status Bar */
.status-bar {
display: flex;
justify-content: space-between;
padding: 5px 15px;
font-size: 14px;
color: #000;
}
.time {
font-weight: bold;
}
.status-icons {
display: flex;
gap: 5px;
}
/* Home Screen */
.home-screen {
flex: 1;
display: flex;
flex-direction: column;
padding: 10px;
}
.app-grid {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 20px;
padding: 15px;
flex: 1;
}
.app-icon {
display: flex;
flex-direction: column;
align-items: center;
}
.app-icon-img {
width: 60px;
height: 60px;
background-color: #fff;
border-radius: 15px;
display: flex;
justify-content: center;
align-items: center;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
margin-bottom: 5px;
}
.app-icon-name {
font-size: 12px;
color: #000;
text-align: center;
}
/* Dock */
.dock {
background-color: rgba(255, 255, 255, 0.5);
backdrop-filter: blur(20px);
border-radius: 25px;
margin: 10px;
padding: 15px;
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 20px;
}
/* App colors */
.phone { background-color: #52c41a; }
.messages { background-color: #30d158; }
.safari { background-color: #1da1f2; }
.music { background-color: #ff2d55; }
.mail { background-color: #5ac8fa; }
.photos { background-color: #5856d6; }
.camera { background-color: #636366; }
.maps { background-color: #5ac8fa; }
.app-store { background-color: #0b84fe; }
.weather { background-color: #ffcc00; }
.notes { background-color: #ff9500; }
.settings { background-color: #8e8e93; }
</style>
</head>
<body>
<div class="status-bar">
<div class="time">9:41</div>
<div class="status-icons">
<span>5G</span>
<span>📶</span>
<span>🔋</span>
</div>
</div>
<div class="home-screen">
<div class="app-grid">
<!-- Row 1 -->
<div class="app-icon">
<div class="app-icon-img phone">📱</div>
<div class="app-icon-name">Phone</div>
</div>
<div class="app-icon">
<div class="app-icon-img messages">💬</div>
<div class="app-icon-name">Messages</div>
</div>
<div class="app-icon">
<div class="app-icon-img safari">🌐</div>
<div class="app-icon-name">Safari</div>
</div>
<div class="app-icon">
<div class="app-icon-img music">🎵</div>
<div class="app-icon-name">Music</div>
</div>
<!-- Row 2 -->
<div class="app-icon">
<div class="app-icon-img mail">✉️</div>
<div class="app-icon-name">Mail</div>
</div>
<div class="app-icon">
<div class="app-icon-img photos">🖼️</div>
<div class="app-icon-name">Photos</div>
</div>
<div class="app-icon">
<div class="app-icon-img camera">📷</div>
<div class="app-icon-name">Camera</div>
</div>
<div class="app-icon">
<div class="app-icon-img maps">🗺️</div>
<div class="app-icon-name">Maps</div>
</div>
<!-- Row 3 -->
<div class="app-icon">
<div class="app-icon-img app-store">🛒</div>
<div class="app-icon-name">App Store</div>
</div>
<div class="app-icon">
<div class="app-icon-img weather">☀️</div>
<div class="app-icon-name">Weather</div>
</div>
<div class="app-icon">
<div class="app-icon-img notes">📝</div>
<div class="app-icon-name">Notes</div>
</div>
<div class="app-icon">
<div class="app-icon-img settings">⚙️</div>
<div class="app-icon-name">Settings</div>
</div>
</div>
<div class="dock">
<div class="app-icon">
<div class="app-icon-img phone">📱</div>
</div>
<div class="app-icon">
<div class="app-icon-img messages">💬</div>
</div>
<div class="app-icon">
<div class="app-icon-img safari">🌐</div>
</div>
<div class="app-icon">
<div class="app-icon-img music">🎵</div>
</div>
</div>
</div>
</body>
</html>
This is how you edit files in iOS or iPadOS 17. Thank you
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