title: Horizontally scrollable tabs focus on center with snap in flutter
body: <p>Here I want to ask or can I make a tutorial like <code>tabs</code>, focusing center but the left and right tabs are 30% transparent like this, thank you!</p>
  <p><a href="https://i.stack.imgur.com/x1om7.png" rel="noreferrer"><img src="https://i.stack.imgur.com/x1om7.png" alt="enter image description here" /></a></p>