https://hacks.mozilla.org/2017/06/css-shapes-clipping-and-masking/
http://www.sitepoint.com/css-shapes-breaking-rectangular-design
The hidden power of border-radius
http://net.tutsplus.com/tutorials/html-css-techniques/quick-tip-practical-css-shapes/
http://net.tutsplus.com/tutorials/html-css-techniques/how-to-create-diagonal-lines-with-css/
CSS Triangles
The Shapes of CSS
A Study of Regular Polygons
Pure CSS Shapes: Triangles, Delicious Logo, and Hearts
Triangles in Javascript
Creating Triangles in CSS
Creating Triangle Arrows in pure CSS
The British Flag - version 2
http://css-tricks.com/examples/ShapesOfCSS/
http://net.tutsplus.com/articles/news/fun-with-css-shapes/
Triangles:
http://css-tricks.com/triangle-with-shadow/
http://stackoverflow.com/questions/7073484/how-does-this-css-triangle-shape-work
http://stackoverflow.com/questions/25360411/responsive-css-triangle-with-percents-width
http://appendto.com/2013/03/pure-css-triangles-explained/
http://davidwalsh.name/css-triangles
http://css-tricks.com/snippets/css/css-triangle/
http://codepen.io/chriscoyier/pen/lotjh
http://apps.eky.hk/css-triangle-generator/
http://cssarrowplease.com/
http://html-generator.weebly.com/css-triangle-generator.html
Cubes:
http://davidwalsh.name/css-cube
Clock:
https://css-tricks.com/of-course-we-can-make-a-css-only-clock-that-tells-the-current-time/ (this can probably be done using combination of circle and triangle, or rotate)
