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Updated: 2026年5月31日
Change Text Color
Original task (JA): 文字色を変える
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Conclusion
Change Text Color — free browser-based HTML/CSS/JS practice
Why it matters in real projects
colorで文字色を指定します。色名、hex、rgbなどが使えます。 Similar patterns appear daily in code review and production UI work.Step-by-step workflow
1. Read the guide and understand the goal of "Change Text Color" 2. Review the HTML/CSS/JS editor pane and start from the starter code 3. Open hints if stuck; compare your diff with the sample solution 4. Click Run and inspect preview/console output 5. Auto-check looks for output containing: color, blue. 6. After success, continue with adjacent exercises in the same categoryCore concept explained
colorで文字色を指定します。色名、hex、rgbなどが使えます。Technical focus
Key HTML elements in this task: h1, style.Hint before you peek at the solution
color プロパティを使います。Sample solution walkthrough
The solution uses HTML tags such as h1, style. Check nesting and closing tags. CSS properties include color. Watch selector spelling and specificity. Explanation: colorで文字色を指定します。色名、hex、rgbなどが使えます。 Hint recap: color プロパティを使います。Solution code
📝 Sample code
<h1>見出し</h1>
<style>h1 { color: blue; }</style>Common mistakes for this exact task
・Skipping the hint: color プロパティを使います。Troubleshooting
Q: Preview does not change after Run A: Ensure you edited the HTML/CSS/JS pane and clicked Run. Q: Looks correct but check fails A: Auto-check looks for output containing: color, blue. Look for typos, full-width spaces, or unclosed tags. Q: Console shows errors A: Open DevTools Console and fix bracket/quote mismatches at the reported line. Q: Hard to type on mobile A: Use landscape mode or continue on desktop—the same URL keeps progress in localStorage.Interview / portfolio tips
・Explain the techniques in "Change Text Color" in your own words within 30 seconds ・Practice walking through each line of the sample solution on a whiteboard ・Be ready to discuss tags: h1, style ・Discuss CSS properties: color ・Prepare one alternative approach and why you chose this oneWhat to do after you pass
Move to the next exercise in the css-basic track, then continue the learning roadmap at /en/learning/css-basic/.Keywords
Free hands-on exercise covering 文字色を変える, css-basic, 入門, h1, style, color, change text color—search-friendly guide for Change Text Color.🧪 Try it here — safe to break things
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Jump to editor■ Exercise task
h1の文字色を青（blue）にしてください。
Hint if stuck
color プロパティを使います。