body {
  background-color: #000;
  color: #fff;
  font-family: 'Times New Roman', serif;
  margin: 0;
  padding: 20px;
  text-align: center;
}

.container {
  max-width: 700px;
  margin: auto;
  padding: 20px;
}

.logo img {
  width: 400px;
  max-width: 95%;
  height: auto;
  margin-bottom: 20px;
}

.lang-buttons {
  margin-bottom: 30px;
}

.lang-buttons button {
  font-family: 'Times New Roman', serif;
  background: transparent;
  color: #fff;
  border: 1px solid #fff;
  padding: 5px 15px;
  margin: 0 10px;
  cursor: pointer;
}
/* === Formulaire === */
form {
  margin-top: 30px;
}

form div {
  margin-bottom: 15px;
}

input,
textarea {
  font-family: 'Times New Roman', serif;
  padding: 10px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  background-color: #111;
  color: #fff;
  border: 1px solid #fff;
}

textarea {
  height: 150px;
  resize: vertical;
}

button[type="submit"] {
  font-family: 'Times New Roman', serif;
  background-color: transparent;
  border: 1px solid #fff;
  color: #fff;
  padding: 10px 20px;
  cursor: pointer;
}
form {
  margin-top: 30px;
  opacity: 0;
  transition: opacity 0.5s ease;
  position: absolute;
  left: 0;
  right: 0;
  margin-left: auto;
  margin-right: auto;
}

form.active {
  opacity: 1;
  position: static;
}