* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Chakra Petch", sans-serif;
  font-weight: 400;
  font-style: normal;
  color: white;
}

html,
body {
  height: 100%;
}

body {
  background: rgb(0, 0, 0);
  display: flex;
  flex-direction: column;
}

#c {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

header {
  background-color: #2c2c2c;
  padding: 20px;
}

header nav ul {
  list-style: none;
  display: flex;
  align-items: center;
}

header nav ul li {
  margin-right: 20px;
}

header nav ul li a {
  text-decoration: none;
  font-weight: bold;
}

main {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo img {
  display: block;
  margin: 0 auto;
  max-width: 80%;
  height: auto;
}

footer {
  background-color: #2c2c2c ;
  text-align: center;
  padding: 20px;
}

.button-actuel {
  color: red;
}

@media (max-width: 600px) {
  .logo img {
    max-width: 95%;
  }
}