what is viewport in css code example

Example 1: responsive meta tag

<meta name="viewport" content="width=device-width, initial-scale=1">

Example 2: how to set viewport in html

<meta name="viewport" content="width=device-width, initial-scale=1.0">

Example 3: css viewport

<meta name="viewport" content="width=device-width, initial-scale=0.9, user-scalable=no">

Example 4: viewport

// viewport for Responsive Design
<meta name="viewport" content="width=device-width, initial-scale=1.0">