Adding H1 to website with odd editor.

Hi, now I want to let everybody know that I’m not the brightest person when it comes to themes. While I know WordPress extremely well, buying a theme and editing them is not always as simple as it may seem.

My website: https://thehergula.com/

The Theme: https://themeforest.net/item/newscore-a-blog-magazine-and-news-theme-for-wp/7851846

After doing some research, I found out that having H1 in your header and categories is an important thing, and while usually the editing code seems quite simple to grasp and change, this theme is extremely weird.

Could someone help me make some sense of this? As when you “Inspect Element”, then click “Style.min.css…” you will see one line of code, and when I try to edit it myself, it is different from all the other themes I have tried, like Jarida, Continuum and Newgen. While all the rest of them are very straight forward and simple to edit, this theme seems to be coded in an odd way, or simply one which I do not recognize.

I know this is vague, but I’m sure someone who knows their themes could help me out in adding H1 to my header, as I’m unable to do so with this theme that I am currently running, without it appearing on my front page.