body {
  font-size: 16px;
  line-height: 1.6;
}

.card {
  background: white;
  padding: 20px;
  margin: 15px auto;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

h1, h2, h3 {
  text-align: center;
}

img {
  width: 100%;
  height: auto;
  display: block;
}
.card {
  max-width: 600px;
  margin: 20px auto;
  padding: 20px;
  box-sizing: border-box;
}
h1 {
  font-size: 1.4rem;
}

h2 {
  font-size: 1.2rem;
}
.title {
  text-align: center;
  font-size: 1.4rem;
  line-height: 1.5;
  margin-bottom: 10px;
}

.subtitle {
  font-size: 1.1rem;
  color: #555;
}

.note {
  font-size: 0.9rem;
  color: #777;
}