feature(videoplayer): add native html5 videoplayer. fix(general): add some small fixes on text and spacing
fix(video): video does not loop on end event
refactor(general): refactor sass, using mixins
feature(description): add responsive behaviour to description section
feature(video): add responsive behaviour to video
feature(impact-tree): add responsive behaviour to impact tree section
feature(quotes): add responsive behaviour to quotes section
fix(quotes): add correct vertical space on quote elements
feature(bottom): add responsive behaviour to bottom. fix(video): remove img on html and add background image with bakcground-size: cover to make it 100% width and works on mobile devices