body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

nav li {
  list-style: none;
}

nav a {
  text-decoration: none;
  color: #000;
  font-size: large;
  font-weight: bold;
}

#h1-contact {
  text-align: center;
}

nav a:hover {
  color: #fff;
  text-decoration: underline;
}

nav a:visited {
  color: gray;
}

header {
  background-color: plum;
  padding: 15px;
}

nav ul {
  padding: 0;
  display: flex;
  justify-content: space-evenly;
}

.form-group {
  display: flex;
  flex-direction: column;
  margin: 5px 0;
}

.form-group label {
  padding-bottom: 3px;
}

#civil {
  width: 40%;
}

.formulaire-contact {
  width: 50%;
  margin: 0 auto;
}
.input-container {
  display: flex;
  justify-content: space-between;
}