.fa:hover {
    opacity: 0.7;
}

.b1
{
  background-color:black;
  border-radius: 10px;
  padding-left: 15px;
  padding-right: 15px;
  padding-top: 10px;
  padding-bottom: 10px;
  color:white;
}
.b1:hover
{
  color:grey;
}
body
{
	background-color: #CCD1D1;
}
.box{
    position: absolute;
    width: 700px;
    height: 400px;
    z-index: 15;
    top: 50%;
    left: 50%;
    margin: -100px 0 0 -150px;
    background: white;
    padding-left:15px;
  }
  .vl {
  border-left: 3px solid green;
  height: 320px;
  position: absolute;
  left: 60%;
  margin-left: 5px;
  top: 50px; 
}