* {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}
header {
display: flex;
align-items: center;
  height: 15vh;
  position: relative;
border-bottom: 2px solid #00498e;
}
h1 {
width: 100%;
  font-size: 3em;
	color: #ed212a;
display: flex;
align-items: center;
justify-content: center;
}
header div {
  border-radius: 0 0 50% 50%;
  border: 2em solid black;
  position: absolute;
  bottom: -4em;
  left: 5%;
  background: black;
}
header img {
  height: 14vh;
  background: black;
}
nav{
    position: absolute;
    top: 20vh;
    left: 90%;
    width: 6%;
    z-index: 2;
}
nav a{
    display: block;
    text-decoration: none;
    color: white;
    line-height: 2.5em;
    text-align: right;
    padding-right: 2em;
    background: rgb(78, 109, 214);
}
main {
  width: 70%;
  margin: 10vh auto;
}
h2{
    color: rgb(78, 109, 214);
    margin: 20vh 0 2vh;
}
main article {
  column-count: 4;
}
main div {
  display: block;
  width: 96%;
  margin: 2% 2% 7% 2%;
  text-align: right;
  position: relative;
}
main div > img {
  width: 100%;
  transition: 0.2s;
}
main div > img:hover {
  transform: scale(1.02);
  box-shadow: 0 0 5px #222;
  cursor: pointer;
}
main div > a {
  height: 2em;
  position: absolute;
  bottom: 0.5%;
  right: 0.5%;
}
#audessus {
  background: rgba(0, 0, 0, 0.86);
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;

  display: flex;
  align-items: center;
  justify-content: center;
}
#audessus img {
  height: 70%;
}
#audessus img#close {
  position: absolute;
  top: 4%;
  right: 4%;
  height: 2em;
  width: 2em;
  z-index: 50
}
#audessus img#close:hover {
  cursor: pointer;
}

@media screen and (max-width: 600px) {
  h1 {
    font-size: 1em;
    text-indent: 25%;
  }
  header div {
    border-radius: 0 0 50% 50%;
    border: 1em solid black;
    position: absolute;
    bottom: -2em;
    left: 5%;
    background: black;
  }
  header img {
    height: 5vh;
    background: black;
  }
  nav{
    position: sticky;
    top: 15vh;
    left: 0;
    width: 90%;
    padding: 0 5%;
    background: rgba(255,255,255,.9);
    display: flex;
    justify-content: space-evenly;
    z-index:2;
  }
  nav a{
    text-align: center;
    padding-right: 0;
    color: rgb(78, 109, 214);
    background: none;
  }
  main {
    width: 98%;
  }
  main article {
    column-count: 2;
  }
  main div {
    width: 100%;
  }
  #audessus img {
    width: 100%;
    height: auto;
  }
  #audessus img#close {
    top: 10vh;
    right: 4vh;
  }
}