Make stories easier to see in News on Mac
In Apple News, you can change the window or the text size to make it easier to read stories.
Change the window
In the News app on your Mac, do any of the following:
Make the window bigger: Drag a corner of the News window to make the window larger.
You can also use News full screen—just move the pointer to the top-left corner of the window, then click the Full Screen button
. To stop using News full screen, move the pointer to the corner again, then click the Exit Full Screen button 
. Hide the sidebar: Click the Sidebar button
in the toolbar or press Option-Command-S. To show the sidebar again, click the button or press the command again.
Change the text size of stories
In the News app
on your Mac, click a story to view it.Change the text size of the story (if the story’s channel supports it):
Make the text bigger: Press Command-Plus Sign (+) until the text is the size you want.
Make the text smaller: Press Command-Minus Sign (-) until the text is the size you want.
The text size is changed for all stories from that channel. To see the change on all your devices, sign in to iCloud on each device using the same Apple ID and turn on iCloud for News.