ul.timeline {
    position: relative;
    padding-left: 3rem;
}

/* Hide desktop video on mobile */
@media (max-width: 767px) {
    .desktop-video {
      display: none;
    }
  }
  
/* Hide mobile video on desktop */
@media (min-width: 768px) {
    .mobile-video {
        display: none;
    }
}

.background-video {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: auto;
    z-index: -1;
}

#background-book{
    min-height:520px;
    overflow: hidden;
}

 /* Vertical line */
ul.timeline:before {
    content: ' ';
    background: #ffffff;
    display: inline-block;
    position: absolute;
    left: 10px;
    width: 6px;
    height: 100%;
    z-index: 400;
    border-radius: 1rem;
}

li.timeline-item {
    margin: 30px 0 0 0 ;
}

/* Timeline item arrow */
.timeline-arrow {
    border-top: 0.5rem solid transparent;
    border-right: 0.5rem solid transparent;
    border-bottom: 0.5rem solid transparent;
    border-left: 0.5rem solid #ebebeb;
    display: block;
    position: absolute;
    left: -1rem;
}

/* Timeline item circle marker */
li.timeline-item::before {
    content: ' ';
    background: #ffffff;
    display: inline-block;
    position: absolute;
    border-radius: 50%;
    border: 3px solid #fff;
    left: -42px;
    width: 15px;
    height: 15px;
    z-index: 1000;
    box-shadow: 0 0 5px rgb(205, 200, 200);
}

.shadow {
    box-shadow: 0px 2px 4px -1px rgba(0, 0, 0, 0.2), 0px 4px 5px 0px rgba(0, 0, 0, 0.14), 0px 1px 10px 0px rgba(0, 0, 0, 0.12);
    transition: box-shadow 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    &:hover {
      box-shadow: 0px 11px 15px -7px rgba(0, 0, 0, 0.2), 0px 24px 38px 3px rgba(0, 0, 0, 0.14), 0px 9px 46px 8px rgba(0, 0, 0, 0.12);
    }
  }
  
.shadow-nohover {
box-shadow: 0px 2px 4px -1px rgba(0, 0, 0, 0.2), 0px 4px 5px 0px rgba(0, 0, 0, 0.14), 0px 1px 10px 0px rgba(0, 0, 0, 0.12);
transition: box-shadow 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-text {
    opacity: 0;
}