add a new problem to be solved using pseudo-class
solved first problem using the :first-child pseudo-class
added a new problem to be solved with pseudo-class nth-child
solved problem using pseudo-class nth-child(odd) to print the correct li
add a new problem to be solved using pseudo-class nth-child
solved problem using nth-child variation an+b where Matches items in intervals of a, starting with the element in position b
adding a new problem to be solved with pseudo-class and pseudo-element
solved a new problem using first-child pseudo-class also first-line pseudo-element
added a new problem to be solved with pseudo-element
solved problem using :before setting content and margin to element
add a problem to be solved with positioning
setting both before and after to be absolute, also to be shown
positioning the before element
positioning the after element
added a new problem to be solved with positioning
solved problem using pseudo-class hover and focus and pseudo-element before and after with positioning top, left, bottom and right
Merge pull request #14 from helmedeiros/pseudo-sitzmark

Learned about pseudo-classes also pseudo-elements.