* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Arial", sans-serif;
}
html,
body {
  height: 100%;
  background-color: #f00f0;
  display: flex;
  justify-content: center;
  align-items: center;
}
a {
  text-decoration: none;
  color: #007bff;
}
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
  background-color: #fff;
  box-shadow: 0 2px 5px gba(0, 0, 0, 0.1);
  border-radius: 5px;
}
button {
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 10px 20px;
  transition: background-color 0.3s;
}
button: hover {
  background-color: #0056b3;
}
@media (max-width: 768px) {
  .container {
    padding: 10px;
  }
  button {
    padding: 8px 16px;
  }
}
.highlight {
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
}