body {
  margin: 0;
  padding: 0;
  background: #f5f5f5;
  font-family: "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

.container {
  max-width: 480px;
  margin: 60px auto;
  background: #ffffff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

h1 {
  text-align: center;
  margin-bottom: 25px;
}

label {
  display: block;
  margin-bottom: 18px;
  font-size: 14px;
}

input,
textarea {
  width: 100%;
  margin-top: 6px;
  padding: 10px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 6px;
  box-sizing: border-box;
}

button {
  width: 100%;
  padding: 14px;
  font-size: 16px;
  border: none;
  border-radius: 30px;
  background: #0066cc;
  color: #fff;
  cursor: pointer;
}

button:hover {
  background: #004fa3;
}