how to add a vertical line in css code example

Example 1: custom hr in css

<hr class="style-two">

/* Inset */

hr.style-two {
border: 0;
height: 0;
border-top: 1px solid rgba(0, 0, 0, 0.1);
border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

Example 2: how to make a dotted hr in css

/* hr {
  border:none;
  border-top:1px dotted #f00; 
  color:#fff;
  background-color:#fff;
  height:1px;
  width:50%;
} */