body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-image: url("pictures/bg.png");
  background-size:cover;
}

header {
  background-image: url("pictures/head.png");
  color: #070707;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
}

header .logo {
  display: flex;
  align-items: center;
}

header .logo img {
  width: 50px;
  margin-right: 10px;
}

header nav ul {
  list-style: none;
  display: flex;
}

header nav ul li {
  margin: 0 10px;
}

header nav ul li a {
  color: #0b0b0b;
  text-decoration: none;
}

.hero {
  text-align: center;
  padding: 50px 20px;
}

.hero .btn {
  background: #4caf50;
  color: #fff;
  padding: 10px 20px;
  border: none;
  cursor: pointer;
  text-decoration: none;
}