Border-left with a horizontal line to the right
<p>I am trying to make a border to the left that connects a horizontal line from the right. I'll show a sketch on how it should look like, and I need ideas on how to make it simple: </p>

<p><img src="https://i.stack.imgur.com/dAht6.png" alt=""></p>

<p>Thanks for many good solutions, the ones below worked fine.</p>

<p>Is there a simple way of making the borders on the left gradient, together with the horizontal line? Also how to fill these gaps? I am trying to make a timeline..</p>