How can I adjust the logo size in Dawn 2.0 theme?

Hi,

I am not able to get this, desktop version does work, but mobile doesnt. I dont know anything about media queries, could someone help?

Where should i modify it? This is the code:

{%- if section.settings.logo != blank -%} {%- assign image_size = 300 | append: 'x' -%} <img srcset="{{ section.settings.logo | img_url: image_size }} 1x, {{ section.settings.logo | img_url: image_size, scale: 2 }} 2x" src="{{ section.settings.logo | img_url: image_size }}" loading="lazy" class="header__heading-logo"