span class in keyword
To make sure our brand name: my4Glogo is written in lowercase and the letters 4G are uppercase and blue I created some span classes and the name looks like this now:
<span class="uk-text-lowercase">my<span class="uk-blue-uppercase">4G</span>logo</span>
The question is: Will search engines still recognize this as my4Glogo or will there be a problem using span classes inside a keyword?
Markup is just a markup. It's bells and whistles on top of the content, but span/div/etc are basically stripped, so your content is fine.