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Cheat Sheet

#container {
display: flex
flex-direction: row /* (default) /* /*justify-content: row align-items: column */
flex-direction: column /*justify-content: column align-items: row */
  • flex-direction: row = main axis

  • flex-direction: column = main axis

  • justify = main axis

  • align = cross axis

Right Click> Inspect (Open DevTools) > Click flex button next to element

Styles Pane > Click icon next to display:flex style to open editor

Reference: New CSS flexbox debugging tools



<!DOCTYPE html>
<html lang="en">
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
header {
display: flex;
justify-content: right;
align-items: center;
height: 200px;
div {
height: 100px;
width: 100px;
border: 1px solid #ddd;
<div>Div 1</div>
<div>Div 2</div>
<div>Div 3</div>
<div>Div 4</div>
<div>Div 5</div>
<div>Div 6</div>