title: CSS to draw slant line border
body: <p>I have not much experience in web designing, I was just trying to write a css 
  to get the out put similar to this
  <a href="https://i.stack.imgur.com/oavxB.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/oavxB.png" alt="enter image description here"></a></p>
  
  <p>Can anyone help me to achieve this kind of header using css</p>