Flex-items With Collapsable Margin On Wrap
CSS Gap Space with Flexbox
Basic concepts of flexbox - CSS: Cascading Style Sheets | MDN
padding-bottom - CSS: Cascading Style Sheets | MDN
css - Flexbox: how to add margin / vertical spacing for the case there is more than one row? - Stack Overflow
html - Remove space (gaps) between multiple lines of flex items when they wrap - Stack Overflow
CSS lay-out met flexbox
CSS Grid or Flexbox? How to pick between the two CSS layout systems
gap | CSS-Tricks - CSS-Tricks
どっちを使う？CSSで横並びのコンテンツ（Float or Flex） | ｗ２ソリューション株式会社 TECH Media
Padding problem at last element in every row when using fxLayoutGap and grid layout
Wrapping text in flex-item? - HTML & CSS - SitePoint Forums | Web Development & Design Community
The peculiar magic of flexbox and auto margins | CSS-Tricks - CSS-Tricks
CSS Gap Space with Flexbox
flex-basis - CSS: Cascading Style Sheets | MDN
Flexbox gutters and negative margins, mostly solved
CSS Gap Space with Flexbox
CSS】Flexboxプロパティ一覧！それぞれの使い方を解説 | ZeroPlus Media
justify-content | CSS-Tricks - CSS-Tricks
Flexible padding for buttons, using flexbox – Terluin Webdesign
Build Smart CSS-only Layouts with Flexbox | Toptal
html - Text doesn't wrap in IE 11 flex layout - Stack Overflow
CSS flex-wrap Property
