body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  font-family: Arial, sans-serif;
  background: black;
  color: white;
}

canvas#background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0; /* particles behind everything */
}

.content {
  position: relative;
  z-index: 1;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.box {
  background: rgba(50, 50, 50, 0.9);
  border-radius: 10px;
  padding: 20px;
  margin: 20px;
  max-width: 800px;
  width: 90%;
  text-align: center;
}

header .logo {
  width: 100px;
  height: 100px;
  margin-bottom: 10px;
  border-radius: 50%; /* Rounded logo */
}

nav a {
  margin: 0 10px;
  text-decoration: none;
  color: #8f8;
  font-weight: bold;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  margin-top: 20px;
  background: #4caf50;
  color: white;
  border-radius: 5px;
  text-decoration: none;
}