body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background-color: #333;
  color: #fff;
  padding: 1em;
  text-align: center;
}

header nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

header nav ul li {
  display: inline-block;
  margin-right: 20px;
}

header nav a {
  color: #fff;
  text-decoration: none;
}

.hero {
  background-image: linear-gradient(to bottom, #333, #555);
  background-size: cover;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
}

section {
  padding: 2em;
}

h1, h2 {
  margin-bottom: 1em;
}

.service-cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.service-card {
  background-color: #f7f7f7;
  padding: 1em;
  margin: 1em;
  border: 1px solid #ddd;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.testimonial-cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.testimonial-card {
  background-color: #f7f7f7;
  padding: 1em;
  margin: 1em;
  border: 1px solid #ddd;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}