body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f4f4;
}
header {
  background: #222;
  color: white;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
header .logo img {
  height: 40px;
}
nav a {
  color: white;
  margin-left: 1rem;
  text-decoration: none;
}
.container {
  max-width: 960px;
  margin: auto;
  padding: 2rem;
  background: white;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}
th, td {
  padding: 0.8rem;
  border-bottom: 1px solid #ccc;
}
th {
  background: #eee;
}
footer {
  text-align: center;
  padding: 2rem;
  background: #222;
  color: white;
  margin-top: 2rem;
}
.btn {
  display: inline-block;
  padding: 0.7rem 1.2rem;
  margin: 0.5rem;
  background: #34a853;
  color: white;
  text-decoration: none;
  border-radius: 5px;
}