viewport tag code example
Example 1: meta name viewport
<meta name="viewport" content="width=device-width, initial-scale=1.0">
Example 2: viewport meta tag
<meta name="viewport" content="width=device-width, initial-scale=1">
Example 3: viewport meta tags
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
Example 4: meta viewport scale
<meta name="viewport" content="width=device-width, user-scalable=no">