/* ヘッダー */
header {
  background-color: #1abc9c;
  color: #fff;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
}

header h1 {
  font-size: 2rem;
  flex-basis: 100%;
  text-align: center;
  color: #000;
}

nav {
  flex-basis: 100%;
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  list-style: none;
}

nav li {
  margin: 0.5rem;
}

nav a {
  color: #fff;
  text-decoration: none;
  font-size: 1.2rem;
}




form {
  align-items: center;
  display: flex;
  justify-content: center;
  margin: 2rem auto;
}

input[type="text"] {
  border: 1px solid #CCCCCC;
  font-size: 1.5rem;
  height: 2.5rem;
  margin-right: 1rem;
  padding: 0.25rem 0.5rem;
  text-align: center;
  width: 5rem;
}

button[type="submit"] {
  background-color: #CCCCCC;
  border: none;
  color: #FFFFFF;
  cursor: pointer;
  font-size: 1.5rem;
  height: 2.5rem;
  padding: 0 1rem;
}

p {
  font-size: 1.5rem;
  margin: 0 auto;
  text-align: center;
}

/* メインコンテンツ */
main {
display: flex;
flex-direction: column;
align-items: center;
padding: 3rem;
}

section {
margin-bottom: 3rem;
text-align: center;
}


section h1 {
font-size: 2rem;
margin-bottom: 3rem;
text-align: center;
}

section h2 {
font-size: 2.5rem;
margin-bottom: 1.5rem;
}

section a {
display: block;
padding: 1rem;
background-color: #1abc9c;
color: #fff;
text-decoration: none;
font-size: 1.2rem;
border-radius: 5px;
width: 500px;
margin: 0 auto;
}

/* フッター */
footer {
background-color: #333;
color: #fff;
text-align: center;
padding: 1rem;
}