body {
  margin: 0;
  font-family: 'Raleway', sans-serif;
  background-color: #fff;
  color: #333;
}

header {
  background-color: red;
  color: #fff;
  padding: 10px;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 24px;
  letter-spacing: 2px;
  color: yellow;
}

nav {
  margin-top: 10px;
}

nav a {
  color: #fff;
  margin: 0 10px;
  text-decoration: none;
  font-size: 14px;
}

nav a:hover {
  text-decoration: underline;
}

footer {
  background-color: #00418e;
  color: #fff;
  text-align: center;
  padding: 10px;
  font-size: 12px;
}

.logoImg {
  display: block;
  margin: 0 auto;
  max-width: 200px;
  height: auto;
}

.smalllogoImg {
  display: block;
  margin: 0 auto;
  max-width: 25px;
  height: auto;
}

a.smalllogoLink {
  display: inline-block;
  width: auto;
  padding: 0;
  margin: 0;
}

.table-scroll-container {
  max-height: 350px;
  overflow-y: auto;
  border: 1px solid #ccc;
}

#csv-table {
  border-collapse: collapse;
  width: 100%;
}

#csv-table thead th {
  position: sticky;
  top: 0;
  background-color: #f9f9f9;
  z-index: 1;
  padding: 8px;
  border-bottom: 1px solid #ccc;
}

#csv-table td {
  padding: 8px;
  border-bottom: 1px solid #eee;
}

/* スマホ用（画面幅980px以下） */
@media (max-width: 980px) {
  .table-scroll-container {
    max-height: 1200px;
  }
}