.timeline {
    position: relative;
    max-width: 1200px;

  }
.timeline::after {
content: "";
visibility: visible;
display: flex;
position: absolute;
width: 2px;
z-index: 0;
height: 100%;
background-color: black;
top: 1rem;
bottom: 0;
left: 3.65rem;
}
.timeline .last-event:last-child::after{
    display: none;
}

.contenido { 
  min-width: 100%;
}