body {
  font-family: Meiryo, "Hiragino Kaku Gothic ProN", sans-serif;
  max-width: 800px;
  margin: 40px auto;
  padding: 0 20px;
  color: #1E2761;
}

h1 {
  border-bottom: 3px solid #D4A843;
  padding-bottom: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
}

th {
  background: #1E2761;
  color: #fff;
}

button {
  background: #1E2761;
  color: #fff;
  border: none;
  padding: 10px 24px;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background: #D4A843;
}

.btn {
  display: inline-block;
  background: #1E2761;
  color: #fff;
  border: none;
  padding: 10px 24px;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover {
  background: #D4A843;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 3px solid #D4A843;
  padding-bottom: 8px;
}

.admin-header nav a {
  color: #1E2761;
  margin-left: 16px;
}