body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f8f9fa;
  color: #333;
}
.container {
  width: 80%;
  margin: auto;
  overflow: hidden;
}
h1{
    text-align: center;
    margin-top: 10px;
}
header {
   background: #e1ece2;
  color: #fff;
  padding: 20px 0;
  text-align: center;
}
header img {
  max-width: 150px;
  display: block;
  margin: 0 auto 10px;
}
nav ul {
  padding: 0;
  list-style: none;
  text-align: center;
}
nav ul li {
  display: inline;
  margin: 0 15px;
}
nav ul li a {
  color: #fff;
  text-decoration: none;
  font-size: 16px;
}
main {
  padding: 20px;
  margin-top: 20px;
  border-radius: 5px;
}
h2,
h3 {
  color: #007300;
}

footer {
  text-align: center;
  padding: 20px;
  background: #007306;
  color: #fff;
  margin-top: 20px;
}