Use Photoshop and practice Type Hierarchy

Create a new document > Web > Web Large > 1920 x 1080

Create 3 sizes of type

Headline type – a very short sentence or few words, Large size

Sub-Headline – a short sentence, medium size

Body – this is  a paragraph with 5 – 7 sentences, small size

Add colorful background colors using the rectangle tool

Add Effects 

save as PSD for your records

SAVE AS PNG and turn it in 

Hierarchy Examples