Consider avoiding viewport values that prevent users from resizing documents.

<meta name="viewport" content="user-scalable=no,initial-scale=1.0,maximum-scale=1.0,minimum-scale=1.0,width=device-width">

Consider avoiding viewport values that prevent users from resizing documents.

ie11부터는 viewport를 지원하지 않으므로 웹 호환성을 위해서는 삭제하는 것이 맞는 것 같다고 함.