Store H1 Tag Using Code Injector

Site URL: https://www.martiancreations.com/handmade-jewelry-shop

Had a Semrush audit done and found no H1 tags on my stores. On Squarespace version 7.1 theme. Using the code injector, I manually put in... 

<h1>

TEXT

</h1>

Worked, but this created a huge gap between my the site header and the content. After inspecting the page code, it seems that code injector puts the H1 or any other code right on the page but hides it through theme styling. (see image - made text red to find it)

This code styling worked for me:

<h1 style="
           font-size: 1px;
           margin-block-end: 0px;
           margin-bottom: 0px;
           margin-block-start: 0px;
           margin-top: 0px;
           ">
  TEXT GOES HERE.
</h1>

Ran a quick h1 tag test and it came up and styling is back to normal. Hope this helps some out there!