#timeline {
	position: absolute;
	bottom:0;
}


.container {
  position:absolute;
  bottom:0;
  left: 50% ;
  width: 80% ;
  transform: translateX(-50%);
}

.container ul li {
  display: inline;
  text-align: center;
  padding-bottom: 20px;
  border-bottom: 5px solid grey ;
  transition: .3s ease-in-out;
}

.container ul li a {
  display: inline-block;
  width: 16%;
  margin-bottom: .5rem ;
  margin: 0;
  text-decoration: none;
  color: grey;
  font-size: 2rem ;
  transition: .3s ease-in-out;
}

.container ul li:hover, .container .choosed {
  padding-bottom: 18px;
  border-bottom: 7px solid white ;
}

.container ul li:hover a, .container .choosed a {
  color:white;
  font-size: 2.5rem ;
}


.container .zero:hover ~ .curs {
  margin-left: 8%;
  opacity: 1 ;
}

.container .one:hover ~ .curs {
  margin-left: 24%;
  opacity: 1 ;
}

.container .two:hover ~ .curs {
  margin-left: 40%;
  opacity: 1;
}

.container .three:hover ~ .curs {
  margin-left: 56%;
  opacity: 1 ;
}

.container .four:hover ~ .curs {
  margin-left: 72%;
  opacity: 1 ;
}

.container .five:hover ~ .curs {
  margin-left: 88% ;
  opacity: 1 ;
}


.curs {
  height: .5rem;
  width: .5em;
  margin: 0;
  background: white;
  border: none;
  position: relative ;
  top: 13px ;
  opacity: 0 ;
  margin-left: 47.5%;
  transition: .3s ease-in-out;
  transform: translate( -50%,-50% ) rotate( 45deg ) ;
}