CSS Layout Flexbox

In this example, we have created a header, two columns/boxes and a footer. On smaller screens, the columns will stack on top of each other.

Resize the browser window to see the responsive effect.

Cities

London

London is the capital city of England. It is the most populous city in the United Kingdom, with a metropolitan area of over 13 million inhabitants.

Standing on the River Thames, London has been a major settlement for two millennia, its history going back to its founding by the Romans, who named it Londinium.