To change text size, use the browser commands.
SafariIn the toolbar, select View > Zoom > Zoom In, Reset or Zoom Out. On the keyboard, press COMMAND + to zoom in, COMMAND - to zoom out or COMMAND 0 to reset.
ChromeIn the toolbar, select View > Zoom In, Actual Size or Zoom Out. On the keyboard, press COMMAND + (Mac) or CTRL + (Windows) to zoom in, COMMAND - (Mac) or CTRL - (Windows) to zoom out or COMMAND 0 (Mac) or CTRL 0 (Windows) to view actual size
FirefoxIn the toolbar, select View > Zoom > Zoom In, Reset or Zoom Out. On the keyboard, press COMMAND + (Mac) or CTRL + (Windows) to zoom in, COMMAND - (Mac) or CTRL - (Windows) to zoom out or COMMAND 0 (Mac) or CTRL 0 (Windows) to view actual size
Internet ExplorerIn the toolbar, select Options > Zoom > Zoom In, Custom or Zoom Out. On the keyboard, press CTRL + to zoom in, CTRL - to zoom out or CTRL 0 to reset.