title: Material Design Dimensions in Flutter
body: <p>I'm new to flutter and I want to make an application like WhatsApp<br>
  I decided to know design dimensions and I went <a href="https://material.io/design/components/app-bars-top.html#specs" rel="nofollow noreferrer">to</a>
  I found the dimensions in dps when I applied the stated dimensions on the app bar <a href="https://i.stack.imgur.com/8apZy.png" rel="nofollow noreferrer">this was the result</a> while <a href="https://i.stack.imgur.com/zshlc.png" rel="nofollow noreferrer">this is the original app bar</a>, so how can I apply material design dimensions (dps, px, etc...) in Flutter</p>