In order to edit your page, you must have it checked out for editing using the light bulb icon. Checking the page out will allow you to see all of the editable regions of a page. For more information ...

How to Edit Image Size in HTML on Tumblr. If your blog images are too large, users may have to scroll to see them. Make the images too small, and blog visitors might not notice them.

Cascade: Creating and Editing Content Notes: If you are responsible for multiple sites, make sure you're in the correct site first. If you're responsible for multiple sections within a particular site ...