html, body {
  margin: 20;
  padding: 0;
  height: 100%;
  background: url('rink.jpg') no-repeat center center fixed;
  background-size: cover;
  font-family: Arial, sans-serif;
}

.header-logo-container {
  text-align: center;
  padding: 2rem 1rem 0;
}

.header-logo-container img {
  max-width: 300px;
  height: auto;
}

#app-container {
  background-color: rgba(255, 255, 255, 0.96);
  max-width: 600px;
  margin: 1rem auto;
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 0 20px rgba(0,0,0,0.3);
}

input, textarea, button, select {
  display: block;
  width: 96%;
  margin: 0.5rem 0;
  padding: 0.5rem;
  font-size: 1rem;
  border-radius: 4px;
  border: 1px solid #ccc;
}

img.logo-preview {
  max-width: 150px;
  display: block;
  margin: 1rem auto;
}