I have a website, that is responsive (has a separate media query for mobile). It looks great on portrait orientation, but messed up on landscape, so we wish to disable landscape orientation for mobile devices (Android & iOS at least) before we fix it. I tried to do so with vieport meta tag, but it doesn't do much, except shows me correct zoom and doesn't allow user to scale, but still allows to change orientation.
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
How can I achieve such effect?