.header-image {
  background-image: url("../images/header-image.jpg");
  background-size: cover;
  background-position: center;
  height: 200px;
  text-align: center;
  color: white;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.header-image h1 {
  margin-bottom: 0;
  padding-top: 25px;
  color: white;
}

.header-image h3 {
  color: white;
}

article {
  margin-top: 0px;
  margin-bottom: 0px;
}

section {
  margin-bottom: 2rem;
  padding: 1rem;
  border: 1px solid #ddd;
  border-radius: 4px;
}

.participant-title {
  background-color: #007bff;
  color: white;
  padding: 0.5rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}

.container {
  padding-top: 0;
}