The theme does not resize the logotypes, this means that you should upload an image in the exact dimensions you wish to see it on the page and set it as a standard logo in Theme options -> Branding menu
But if you are checking the site on the High Definition screens such as MacBook Pro, you can notice that logo lose it’s clarity and looks blurry because HD screens use twice more physical pixels to display the logo so the logo scaled up.
To solve this you can:
1) Upload Retina logo version. For this go to Theme options > Branding > upload High-DPI (retina) logos (which should be 2X original size). Please notice that it’s very important to keep HDPI logo exactly two times bigger.
If the standard logo is (for example) 200×200, the HDPI logo should be 400×400.
2) Use SVG logo image format. The procedure how to upload SVG files described in the following knowledge base article https://support.dream-theme.com/knowledgebase/svg-logo/