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39 interview questions on HTML5/CSS3for developers (2024)

Test your technical skills before an interview of HTML5/CSS3 with 39 corrected questions. Beginner, Intermediate or Expert level.

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39 questions
Hard
8 votes1722 runs1 comment

What is the `contenteditable` attribute in HTML5?

Web developer
html5
contenteditable
Jean-marie Cléryat Dec 2, 2021
Hard
8 votes1711 runs1 comment
Hard
6 votes1755 runs1 comment
Hard
6 votes1751 runs1 comment
Easy
6 votes1748 runs1 comment

How to add a sandbox attribute to an iframe in HTML5

Web developer
iframe
sandbox
Jean-marie Cléryat Dec 1, 2021
Easy
6 votes1706 runs1 comment

How to create a navigation section in HTML5

Web developer
html
section
Jean-marie Cléryat Dec 1, 2021
Hard
5 votes1763 runs0 comment

What is the `<output>` element in HTML5?

Web developer
html5
form
Jean-marie Cléryat Dec 1, 2021
Hard
5 votes1747 runs0 comment

Write a doctype for HTML5

Web developer
html5
doctype
Jean-marie Cléryat Dec 2, 2021
Easy
5 votes1726 runs1 comment
Easy
5 votes1698 runs1 comment

What is the selector `nav a[href^=http://]`?

Web developer
html5
selectors
Jean-marie Cléryat Dec 1, 2021
Hard
4 votes1773 runs0 comment

How to select all images in HTML5 with CSS

Web developer
css
selectors
Jean-marie Cléryat Nov 29, 2021
Hard
4 votes1755 runs2 comments
Medium
4 votes1754 runs0 comment
Hard
4 votes1749 runs0 comment

How to add a border to an image in HTML5

Web developer
html5
javascript
Jean-marie Cléryat Dec 2, 2021
Easy
4 votes1719 runs0 comment
Hard
3 votes1781 runs1 comment
Hard
3 votes1768 runs0 comment
Hard
3 votes1736 runs0 comment
Hard
3 votes1723 runs0 comment
Hard
3 votes1689 runs0 comment

Differences between SVG and Canvas

Web developer
html5
svg
canvas
Jean-marie Cléryat Dec 2, 2021