* {
  font-family: Verdana, Tahoma, sans-serif;
}
nav {
  width: 60vw;
  color: var(--text-color);
  display: flex;
  justify-content: space-around;
}

nav a:hover {
  color: rgb(100, 103, 243);
  transition: 100ms;
}

#menu {
  display: flex;
  width: 90vw;
  justify-content: space-between;
  align-items: center;
  margin-top: 5vh;
  border-bottom: solid rgba(200, 200, 200, 0.582) 1px;
  padding-bottom: 10px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 30px;
  position: sticky;
}

#acheter {
  color: white;
  outline: none;
  background: rgb(100, 103, 243);
  border: none;
  border-radius: 5px;
  padding: 10px 20px;
}
#bitcoinlogo {
  width: 8em;
}

body {
  margin: auto;
}
a {
  text-decoration: none;
  color: black;
}

#contenu{
  margin-left:8%;
  margin-right: 8%;
}
.row {
  display: flex;
  flex-direction: row;
}
.row div {
  width: 50%;
  height: 60vh;
}

.info {
  background: #ff9900;
  font-size: 1.3em;
}

.info p {
  margin: 5% 8%;
}
.illustration {
  display: flex;
  justify-content: center;
  align-items: center;
}
.illustration h1 {
  margin-left: auto;
  margin-right: auto;
  width: auto;
  color: #132c47;
}

#illustration_1 {
  background-image: url(../img/bitcoin_piece.png);
  background-size: cover;
  background-repeat: no-repeat;
}

#illustration_1 h1 {
  color: white;
}

#illustration_2 {
  background-image: url(../img/blockchain.jpg);
  background-size: cover;
  background-repeat: no-repeat;
}

#illustration_3 {
  background-image: url(../img/speculation.jpg);
  background-size: cover;
  background-repeat: no-repeat;
}

#illustration_3 h1 {
  color: white;
}

@media (max-width: 700px) {
  .row {
    flex-direction: column;
  }
  .row div {
    width: 100%;
  }
  #row2 {
    display: flex;
    flex-direction: column-reverse;
  }
}