CSS - Styling in Mozilla different then Google Chrome
<p>When I edited the header CSS in my Chrome browser everything is centered, when I open it in Firefox it's not.</p>

<p>Chrome:</p>

<p><a href="https://i.stack.imgur.com/uVMaK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uVMaK.png" alt="Chrome"></a></p>

<p>Firefox:</p>

<p><a href="https://i.stack.imgur.com/lN6VN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lN6VN.png" alt="Firefox"></a></p>

<p>What am I doing wrong in the styling settings? The website is:</p>

<p><a href="https://www.thefixedgearshop.com" rel="nofollow noreferrer">https://www.thefixedgearshop.com</a></p>