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

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

header {
  background-color: #333;
  color: #fff;
  padding: 20px;
  text-align: center;
}

header .logo h1 {
  margin: 0;
  font-size: 2.5em;
}

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

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

nav ul li a {
  color: #fff;
  text-decoration: none;
  font-size: 1.1em;
}

main {
  padding: 20px;
}

section {
  margin: 20px 0;
}

.graph-container {
  display: flex;
  justify-content: space-between;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
}

.bar {
  width: 30%;
  height: 200px;
  background-color: #4caf50;
  border-radius: 10px;
  transition: height 1s ease-in-out;
}

.bar.healthy {
  background-color: #4caf50; /* Green for healthy */
}

.bar.moderate {
  background-color: #ffeb3b; /* Yellow for moderate */
}

.bar.poor {
  background-color: #f44336; /* Red for poor */
}

footer {
  text-align: center;
  padding: 10px;
  background-color: #333;
  color: #fff;
  position: fixed;
  width: 100%;
  bottom: 0;
}