How do I solve the size problem in the logo?

I made a logo and added it to the site, but the size is too small.

This is the logo I will add

In order to not have to redo the header too much I would crop the logo.

Flarum default logo size is 275×60px.

.Header-logo {
    max-height: 46px;
}

.App-header {
    height: 60px;
}

Is my current CSS, and I think it's pretty snug 🙂