converting html to css to align header to the left with 0 margin

Hello. I hope this is the right place to post this. I am trying to align my header logo to the very left with 0 margin/padding. I’ve tried writing the code myself but can’t seem to get it right.

When I right-click to inspect my website I found the code where the changes need to be made:

So I edit it to this:

That does exactly what I want it to do in the preview but now I can’t figure out how to convert that html into the css code I need for wordpress.

The page I need help with: [log in to see the link]