w3c school flex code example
Example 1: flex box in css
<html>
<head>
<style>
.parent{
display: flex or inline-flex;
flex-direction: row or column;
flex-wrap: wrap or wrap-reverse;
}
</style>
</head>
<body>
<div class="parent">
<div class="child-1"></div>
.
.
.
</div>
</body>
</html>
Example 2: css flex property
flex: none /* value 'none' case */
flex: <'flex-grow'> /* One value syntax, variation 1 */
flex: <'flex-basis'> /* One value syntax, variation 2 */
flex: <'flex-grow'> <'flex-basis'> /* Two values syntax, variation 1 */
flex: <'flex-grow'> <'flex-shrink'> /* Two values syntax, variation 2 */
flex: <'flex-grow'> <'flex-shrink'> <'flex-basis'> /* Three values syntax */
flex: inherit