body {
  font-family: "Arial", sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f5f5f5;
  color: #333;
}

header {
  background-color: #464a99;
  color: white;
  padding: 20px 0;
  text-align: center;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 20px;
}

.main-content {
  background-color: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.ad-container {
  background-color: #f9f9f9;
  border: 1px solid #ddd;
  padding: 15px;
  text-align: center;
  border-radius: 8px;
}

.game-card {
  background-color: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
}

.game-card img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin-bottom: 15px;
}

.play-button {
  display: inline-block;
  background-color: #34a853;
  color: white;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 4px;
  font-weight: bold;
  transition: background-color 0.3s;
}

.play-button:hover {
  background-color: #2d8e47;
}

footer {
  background-color: #333;
  color: white;
  text-align: center;
  padding: 20px 0;
  margin-top: 30px;
}

@media (max-width: 768px) {
  .container {
    grid-template-columns: 1fr;
  }
}