body {
  font-family: Arial, sans-serif;
  background-color: #fdfdfd;
  color: #111;
  margin: 0;
  padding: 20px;
}
.container {
  max-width: 700px;
  margin: auto;
}
.subtitle, .subtitle-fr {
  font-style: italic;
  margin-top: -10px;
  color: #555;
}
h1 {
  color: #2c3e50;
}
h2 {
  color: #34495e;
}
ul {
  margin-left: 20px;
}
form {
  margin-top: 30px;
}
input, textarea {
  width: 100%;
  margin: 5px 0;
  padding: 8px;
  font-size: 16px;
  box-sizing: border-box;
}
button {
  padding: 10px 15px;
  background-color: #2c3e50;
  color: white;
  border: none;
  cursor: pointer;
  margin-top: 10px;
}
footer {
  margin-top: 40px;
  font-size: 14px;
  text-align: center;
  color: #aaa;
}