Site title and main menu

@juditbokros:
1. That menu width depends on number of menu item you have listed. You can add the following css in “Appearance => Theme Options => Custom CSS” box and fix that issued:
#header #mainmenu ul li a { padding: 0 14px; }

2. Your logo image size is really large and I don’t know what are you trying to do it. Can you share what you want then I can suggest you accordingly. I see that you have added in the following css:

#site-logo a img {
    max-width: 40%;
    padding-right: 0;
}

But looking at your site, I suggest you to upload smaller image size and if you want different let me know it.

@juditbokros:
1. Oh if you want to use Pro version, then css will be different. As Simple Catch Pro is coded in responsive design where as free in static design.
2. It’s because of your following css, which make your logo smaller and create a gap.

#site-logo a img {
    max-width: 30%;
    padding-right: 0;
}