responsive viewport meta code example
Example 1: meta name viewport
<meta name="viewport" content="width=device-width, initial-scale=1.0">
Example 2: viewport meta tags
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="viewport" content="width=device-width, initial-scale=1.0" />