In order for text to be accessible, the font should not exclude any readers, nor slow down the reading speed of any website visitor, including those with visual impairments and reading disorders.
It is important to pick a font that is simple, unembellished and clear. Top accessibility fonts include: Tahoma, Calibri, Arial, Verdana, Times New Roman.
PowerPoint -
On the Home tab, in the Font group, select a font in the Font list.
Entire Presentation (not available on the web)
On the View tab, in the Master Views group, click Slide Master.
In the left pane that contains the slide masters and layouts, click the slide master thumbnail or layout that contains the font that you want to change.
On the slide master or layout, click the title text or the level of body text that you want to apply a new font style to.
On the Slide Master tab, in the Background group, click Fonts, and then select a font from the list.
Word
Canvas and Study