CSS Flex and List items dont work together
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>list-item.html</title>
<style>
.container {
padding: 0;
margin: 0;
list-style: none;
display: flex;
}
.item {
background: lightsalmon;
padding: 5pt;
width: 50pt;
margin: 5pt;
line-height: 50pt;
color: white;
font-weight: bold;
font-size: 2em;
text-align: center;
}
</style>
</head>
<body>
<ul class="container stretch">
<li class="item">1<br>2</li>
<li class="item">3</li>
<li class="item">4<br>5</li>
<li class="item">6</li>
</ul>
</body>
</html>