http://codepen.io/enxaneta/full/adLPwv/,Flexbox property manipulator,https://github.com/afonsopacifer/awesome-flexbox#readme,Flexbox error: <HTTPError 403: 'Forbidden'> | reason: Forbidden
https://lucasgruwez.github.io/waffle-grid,Waffle Grid,https://github.com/afonsopacifer/awesome-flexbox#readme,Flexbox error: <HTTPError 404: 'Not Found'> | reason: Not Found
http://codepen.io/collection/KegmA/,Cool examples of flexbox layout,https://github.com/afonsopacifer/awesome-flexbox#readme,Flexbox error: <HTTPError 403: 'Forbidden'> | reason: Forbidden
https://zyxneo.github.io/flexbox/try-flexbox,Try Flexbox,https://github.com/afonsopacifer/awesome-flexbox#readme,Flexbox error: <HTTPError 404: 'Not Found'> | reason: Not Found
http://codepen.io/paultrone/pen/xwxNmQ?utm_campaign=CSS%2BLayout%2BNews&utm_medium=email&utm_source=CSS_Layout_News_6,Visualizing Flexbox,https://github.com/afonsopacifer/awesome-flexbox#readme,Flexbox error: <HTTPError 403: 'Forbidden'> | reason: Forbidden
https://developer.mozilla.org/pt-BR/docs/CSS/Usando_caixas_flexiveis_css,Usando caixas flexiveis CSS (pt-br),https://github.com/afonsopacifer/awesome-flexbox#readme,Flexbox error: <HTTPError 404: 'Not Found'> | reason: Not Found
https://cvan.io/flexboxin5/,Flexbox in 5 minutes,https://github.com/afonsopacifer/awesome-flexbox#readme,Flexbox error: URLError(gaierror(8, 'nodename nor servname provided, or not known')) | reason: [Errno 8] nodename nor servname provided, or not known
http://www.sketchingwithcss.com/flex-container-2/,Flex-Container Pt. 2: Rows and Columns,https://github.com/afonsopacifer/awesome-flexbox#readme,Flexbox error: timeout('The read operation timed out') | reason: 