(eng. semantics) When you open html element and close it with different
tag. Etc. <h5></h4>
Also using
div element too much will make for a good semantika on your website.
Code
editor might underline your semantika but just ignore it or turn off this "feature"
P1: Kamo to čo tam použivaš section, aside, header, footer elementy som to v živote nevidel. (
Dude why u are using section aside header footer elements I have never seen them)
P2: Hej no to je na kokot semantika, prepiš to na
div. (You right, that semantika is
fucked up, just replace it with div)