* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background: #f4f4f4;
  color: #333;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
  padding: 20px;
}

header {
  background: #111;
  color: #fff;
  padding: 20px 0;
}

header h1 {
  float: left;
  margin-left: 10px;
}

nav ul {
  list-style: none;
  float: right;
}

nav ul li {
  display: inline;
  margin-left: 20px;
}

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

nav a.active, nav a:hover {
  text-decoration: underline;
}

.hero {
  background: url('https://via.placeholder.com/1600x400?text=UPVC+Spraying') no-repeat center center/cover;
  color: #fff;
  padding: 100px 0;
  text-align: center;
}

.hero .btn {
  display: inline-block;
  background: #007BFF;
  color: #fff;
  padding: 10px 25px;
  text-decoration: none;
  margin-top: 20px;
  border-radius: 5px;
}

.features {
  background: #fff;
  padding: 50px 0;
}

.features h3 {
  text-align: center;
  margin-bottom: 30px;
}

.grid {
  display: flex;
  justify-content: space-around;
  gap: 20px;
  flex-wrap: wrap;
}

.grid div {
  background: #eee;
  padding: 20px;
  border-radius: 8px;
  flex: 1;
  min-width: 200px;
}

footer {
  background: #222;
  color: #fff;
  text-align: center;
  padding: 20px 0;
  margin-top: 40px;
}

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