body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
  color: #333;
}

.container {
  width: 80%;
  margin: 0 auto;
  max-width: 1200px;
}

header {
  background-color: #007bff;
  padding: 20px 0;
  text-align: center;
}

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

main {
  float: left;
  width: 70%;
  padding: 20px;
  box-sizing: border-box;
}

aside {
  float: right;
  width: 30%;
  padding: 20px;
  box-sizing: border-box;
}

.featured-posts,
.sidebar-widget {
  margin-bottom: 30px;
}

.featured-posts h2,
.sidebar-widget h3 {
  color: #007bff;
  margin-bottom: 15px;
}

article {
  background: #fff;
  padding: 15px;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
}

article img {
  max-width: 100%;
  height: auto;
  border-radius: 5px;
}

.meta {
  font-size: 0.9em;
  color: #666;
  margin: 10px 0;
}

iframe {
  width: 100%;
  max-width: 480px;
  height: 270px;
  border: none;
}

ul {
  list-style: none;
  padding: 0;
}

ul li {
  margin: 10px 0;
  font-size: 1em;
}

@media (max-width: 768px) {
  main,
  aside {
    float: none;
    width: 100%;
  }
}