The appearance manager is on the top of every page. It is there so you can change the way the website looks.
To make the words bigger, click on this button on the menu.
To make the words smaller, click on this button on the menu.
To change the colour of the words, click on this button on the menu.
To change the way the words look, click on this button on the menu.
To change the background colour, click on this button on the menu.
Click "save" to keep the changes.
To go back to how the page looked before, click reset.