You can set some basic styles to your page using the styles feature.
 You can either set a solid background by selecting a color. You can attach a file and select it in the “Background Image” box.
Fonts: Font family of your body text (includes some Open Source fonts). Font-size: Font-size of your website body text (large is good). Heading Font: Font family of your headings.
Apart from this you can also add custom style rules using CSS
There are tons of CSS rules and tricks that fall out of scope of this manual. But you could add your own style to certain elements like h1, h2 etc and also create your own style classes that you can use in elements in your body content.