Bootstrap. nuff said.
Create a webpage that demonstrates 3 concepts of bootstrap
this is a better way to have navigation on a website. these much like some buttons down below are blank. below is also another way to navigate using what they call pills.
glyphicons are just a style technique to spice up the web page and gives more than just words to look at and if done correctly they can be combined with buttons and links. there are a ton more at the link below (also with a glyphcon)
this is used to grab peoples attention. if you didnt go from the top down on this website go to the top to see some more consepts.