Before publishing your theme, take a moment make sure everything is ready to go.
Do CSS styles look correct for all basic elements?
Do you have the required/recommended
Do embeds look good by default?
it's recommended to set
max-width: 100%;on images, videos, iframes, audio, etc.
you may consider putting
width: 100%;on iframes by default.
Does the theme look great on large screens and small devices?
ADA/508 Compliance and Accessibility:
Are colors and color contrasts 508 compliant?
Do images have alt tags?
Can you easily navigate the site with your keyboard?
Is the screenreader experience logical and semantically correct?