I'm new to making websites, but I'm trying to make a similar website to the demo Twenty Twelve.
There is a big blank space under the nav bar that I want to remove. Does anyone know how to do this? This is my website: http://altijdlerenlive.wordpress.com/
I want it to not have the blank space like in the demo: http://theme.wordpress.com/themes/twentytwelve/
I read somewhere that I might have to do something with CSS customization, but I don't know how to find my CSS.
The blog I need help with is leidenhomelearners.wordpress.com.