.side-line {
  position: absolute;
  top: 0%;
  width: 40px;
  height: 110%;
  background: #1c2b4a;
}

.left-line { left: 0; }
.right-line { right: 0; }
@media screen and (min-width: 200px) and (max-width: 750px) {
    .side-line{
        display: none;
    }
}