You can quickly change the text size by zooming in and out in your browser window. Below are instructions for both Windows OS and Mac OS.
Hold down one of the control keys (Ctrl), then press the (+) or (-) key until you reach the desired zoom level.
Alternatively, you can hold (Ctrl) and use your mouse's scroll wheel to adjust zoom level.
Hold down one of the command keys (⌘), then press the (+) or (-) key until you reach the desired zoom level.