/*Body*/
body{
  background-color: lightgray;
  scroll-behavior: smooth;
  margin: 0;
  padding: 0;
}


  /*Header*/
header{
  background-image: url('pictures/achievements.jpg');
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  height: 100%;
  text-align: center;
  padding-bottom: 25%;
}
header h1{
  color: black;
  font-size: 100px;
  text-align: left;
  font-family: Roboto;
  margin-top: 9%;
  margin-left: 11%;
}
header h3{
  color: black;
  font-size: 24px;
  font-family: Arial;
  text-align: left;
  margin-top: -4.5%;
  margin-left: 11%;
}


  /*Navigation*/
nav ul{
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
}
nav ul li{
  cursor: pointer;
  float: left;
  font-size: 18px;
  padding: 1.2em;
  text-align: center;
  margin-top: 1%;
}
.logo{
  color: black;
  font-size: 26px;
  margin-top: -2px;
}
nav ul li a{
  color: black;
  text-decoration: none;
}
section h1{
  margin-left: 10%;
  margin-top: 7%;
  font-size: 16px;
}
section h3{
  font-size: 24px;
  margin-left: 10%;
  width: 20%;
}
section p{
  margin-left: 30%;
  margin-top: -7%;
}

  /*Timeline*/
.timeline {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
}
.timeline::after {
  content: '';
  position: absolute;
  width: 6px;
  background-color: white;
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -3px;
}
.container {
  padding: 10px 40px;
  position: relative;
  background-color: inherit;
  width: 48%;
}
.container::after {
  content: '';
  position: absolute;
  width: 25px;
  height: 25px;
  right: -17px;
  background-color: white;
  border: 4px solid #FF9F55;
  top: 15px;
  border-radius: 50%;
  z-index: 1;
}
.left {
  right: 4.7%;
}
.right {
  left: 50%;
}
.left::before {
  content: " ";
  height: 0;
  position: absolute;
  top: 22px;
  width: 0;
  z-index: 1;
  right: 30px;
  border: medium solid white;
  border-width: 10px 0 10px 10px;
  border-color: transparent transparent transparent white;
}
.right::before {
  content: " ";
  height: 0;
  position: absolute;
  top: 22px;
  width: 0;
  z-index: 1;
  left: 30px;
  border: medium solid white;
  border-width: 10px 10px 10px 0;
  border-color: transparent white transparent transparent;
}
.right::after {
  left: -16px;
}
.content {
  padding: 20px 30px;
  background-color: white;
  position: relative;
  border-radius: 6px;
}


  /*Footer*/
footer{
  background-color: white;
  color: sliver;
  font-family: Helvetica;
  font-size: 17px;
  padding: 0.5em 0 0.5em 3em;
  margin-top: 2%;
}
.links{
  font-size: 12px;
  text-align: center;
}


  /*Scroll to top button*/
#myBtn {
  display: none; 
  position: fixed; 
  bottom: 25px; 
  right: 30px; 
  z-index: 99; 
  border: none; 
  outline: none;
  background-color: red; 
  color: white; 
  cursor: pointer; 
  padding: 15px; 
  border-radius: 10px; 
  font-size: 18px; 
}
#myBtn:hover {
  background-color: #555; 
}