The act of choosing a new theme from the officially approved Tumblr list clears any edits you've made to your existing theme's HTML. If you want to save these edits for future use, click the "Edit ...

Because so many custom Tumblr themes exist, there are multiple ways to update a theme's CSS code. One way to add a background photo to any custom Tumblr theme is to embed a simple CSS tag at the ...

Google's John Mueller and Martin Splitt spoke for just under 40 minutes on the topic of CSS and SEO. They covered why CSS ...