title: Dear all flutter developer I would like to ask about How to draw line as the image below "flutter concept"?
body: <p><a href="https://i.stack.imgur.com/3sGfX.jpg" rel="nofollow noreferrer">enter image description here</a></p>
  <p>Dear all flutter developer I would like to ask about How to draw line as the image below &quot;flutter concept&quot;? I meaning vertical line sharp.</p>