body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f5f5;
  color: #333;
}
header {
  background: #006400;
  color: #fff;
  padding: 20px;
  text-align: center;
}
main {
  padding: 20px;
}
.dashboard, .interactions {
  background: #fff;
  border-radius: 8px;
  margin: 20px auto;
  padding: 20px;
  max-width: 600px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
footer {
  background: #eee;
  text-align: center;
  padding: 10px;
  position: fixed;
  width: 100%;
  bottom: 0;
}