CSS Program to Media Query for Dark Mode with Explanation
CSS
Hard
Responsive Design
20 views
1 min read
84 words
This problem helps you practice core CSS fundamentals in a practical way. It builds intuition around media, dark, use. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Use prefers-color-scheme to adjust colors.
Input Format
No input.
Output Format
Print the HTML+CSS code in one block.
Constraints
Use @media (prefers-color-scheme: dark).
Code Solution
This explanation is written for learning purposes and to help beginners understand the concept clearly.
<!doctype html>
<html lang='en'>
<head>
<meta charset='utf-8'>
<meta name='viewport' content='width=device-width, initial-scale=1'>
<title>meetcode</title>
<style>
body { margin: 0; font-family: system-ui, Arial, sans-serif; background: #fff; color: #111; padding: 16px; }
@media (prefers-color-scheme: dark) {
body { background: #0b1220; color: #f7f7f7; }
}
</style>
</head>
<body>
<h1>meetcode</h1>
<p>Theme changes with system setting.</p>
</body>
</html>
Output Example
No sample I/O is provided for this question.
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Solution Guide
Problem
Use prefers-color-scheme to adjust colors.
Input / Output
Output
Print the HTML+CSS code in one block.
Constraints
Use @media (prefers-color-scheme: dark).
Details
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Official Solution
<!doctype html>
<html lang='en'>
<head>
<meta charset='utf-8'>
<meta name='viewport' content='width=device-width, initial-scale=1'>
<title>meetcode</title>
<style>
body { margin: 0; font-family: system-ui, Arial, sans-serif; background: #fff; color: #111; padding: 16px; }
@media (prefers-color-scheme: dark) {
body { background: #0b1220; color: #f7f7f7; }
}
</style>
</head>
<body>
<h1>meetcode</h1>
<p>Theme changes with system setting.</p>
</body>
</html>
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