body {
  background-image: url("haikei.png");
  background-attachment: fixed;
  color: white;
  font-family: "MS Pゴシック", sans-serif;
  text-align: center;
}

h1 {
  margin-top: 30px;
}

.club-list {
  margin: 20px;
}

.club {
  margin-bottom: 30px;
  border-bottom: 1px dashed white;
  padding-bottom: 20px;
}

.club-name {
  font-size: 24px;
  color: #00ff00;
  font-weight: bold;
}

.club img {
  width: 280px;
  border: 2px solid white;
  margin: 10px 0;
}

.btn {
  padding: 12px 24px;
  border: 2px solid white;
  cursor: pointer;
  font-size: 16px;
  margin: 10px 5px;
  color: white;
}

.blue-btn {
  background-color: #004098;
}

.red-btn {
    background-color: #004098;
  font-weight: bold;
}

.content-box {
  margin: 30px 15px;
  padding: 25px;
  border: 3px double white;
  background-color: rgba(0, 0, 0, 0.7);
  text-align: left;
}