Error messages page does not have the viewport meta tag

[rellect]

Try to send an empty comment, you will get an error that you need to fill the fields. This error page does not have the viewport meta tag, which means this page don't have a responsive style in mobile.

This is tested in 4.0 beta.

[leogopal]

Adds the viewport meta tag for mobile assistance.

[johnbillion]

How strange. The viewport meta tag got missed in r26299 despite it being in the patch on #25956.

@iammattthomas Was there a reason for this or did it just get missed?

[iammattthomas]

Replying to johnbillion:

How strange. The viewport meta tag got missed in r26299 despite it being in the patch on #25956.

@iammattthomas Was there a reason for this or did it just get missed?

Hrm, hard to say, given how long ago it was—but given my commit message in r26299 it looks like it was just an oversight on my part:

Update error screens with the new visual design:

• Bring in new styles for backgrounds/text/link/borders/buttons
• Switch to device-width for the viewport and tweak margins etc so the layout works nicely on all device sizes

[rachelbaker]

Let's fix in 4.3, patch looks good.

[johnbillion]

In 32501:

Add a viewport meta tag to wp_die().

Props leogopal

Fixes #29336