tomaja

Actually, it works. I just tested the code with Android mobile phone and with viewport resizer in normal desktop browser, header is fixed only for 768px wide screens and larger.
It must be something else in your custom code that make that part of the site hidden. Can you share a link to your site ?

Hi Piotr,
editing any of the default theme files is not advised. Those strings should already be translated in the theme *.mo files for your language, like

#: ../parts/class-content-comments.php:63
#, php-format
msgid "One thought on “%2$s”"
msgstr "Jeden komentarz do „%2$s”"

If not, you could translate them in default.po file for your language and then convert it to *.mo file with poEdit or even with online convertor. Then you should place your mo file into the ../customizr/lang folder.
I guess wordpress is set to show your language in wp-config.php with WPLANG, e.g. define ('WPLANG', 'pl_PL');

Ops, sorry I just saw your reply. It should be

.carousel-caption a.btn {
	float: right;
}

.round-div {
display: none;
}

should do the trick. Hope it helps.

You can do that by disabling “Force logo dimensions…” in the customizr options for Logo&Favicon (at yoursite.com/wp-admin/customize.php)

Check this snippet for solutions. I hope it will help you

@acub you are probably right, I was mislead with “default logo”