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CodePrimer

Search a living directory of web syntax. Pick a problem, copy a working sample, then adapt it.

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Tags basics 48 php 45 javascript 24 html 23 css 18 dom 18 forms 16 database 14 layout 8 sql 7 events 6 arrays 6 pdo 6 http 5 control-flow 5 a11y 5 security 4 responsive 3 components 3 media 3 flexbox 3 functions 2 auth 2 selectors 2

8 snippets

CSS Beginner

CSS box model

Why is my element wider than expected?

Layout basics css layout
CSS Beginner

Margin vs padding

What is the difference between margin and padding?

Layout css layout
CSS Beginner

display block inline flex

How does display change layout?

Layout css layout
CSS Intermediate

CSS position values

How do I pin an element or overlap layers?

Layout css layout
CSS Beginner

Flex row with gap

How do I put items in a horizontal row?

Layout css layout flexbox
CSS Beginner

Max-width page container

How do I keep content from stretching too wide?

Layout css layout
CSS Beginner

Space-between header layout

How do I put logo left and links right?

Layout css layout flexbox
HTML Beginner

Semantic navigation bar

How do I mark up a site nav?

Layout html a11y layout

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