From the menu that appears, select “Edit Alt Text.” Alternatively, you may select the “Alt Text” option found in the “Accessibility” group of the object’s “Format” tab. . Depending on the content of the image, sometimes the feature gives you descriptive tags and sometimes you get full sentences. You can change a button color using plain HTML or using CSS (Cascading Style Sheets) in HTML5. People who use screen readers are usually either completely blind o… Note: Image descriptions cannot be added to videos. ... Activate the Close button. . This wikiHow teaches you how to change a button color in HTML. type: Specifies the type of the button. Form submit buttons usually send the form data to the script that was specified in the action attribute of the formtag (as described above). The