HTML body not filling complete width on mobile devices [closed]

Answer 1

It might be because of a very long word on your webpage. After using the correct viewport meta tag:

I tried this out, by placing this text inside a paragraph element, inside some empty HTML document:

Here I have a text, and I am going to use a very long, and not-imaginary word (oh it's real) inside. Without some word-breaking CSS, the result will break the screen on smaller devices: Pseudopseudohypoparathyroidism

What happened when I decreased the screen size without the mobile phone simulator:

And what happened when I decreased the screen size with the mobile phone simulator:

Quite the difference. My tip: use the following CSS attribute:

p {
    word-break: break-word;
}