/* General styles */
body {
  font-family: Arial, sans-serif;
  color: #333;
  background-color: #eee;
}

a {
  color: #333;
  text-decoration: none;
}

.active {
  font-weight: bold;
}

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

header h1 {
  margin: 0;
  font-size: 36px;
}

/* Navigation menu styles */
nav {
  background-color: #ccc;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: space-around;
}

nav li {
  margin: 0 10px;
}

nav a {
  display: block;
  padding: 10px;
}

/* Main content styles */
main {
  padding: 20px;
}

.tool {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 20px 0;
  width: 45%;
}

.tool h3 {
  margin: 0;
  font-size: 24px;
}

.tool button {
  background-color: #333;
  color: #fff;
  border: none;
  padding: 10px 20px;
  font-size: 18px;
  cursor: pointer;
}

/* Footer styles */
footer {
  background-color: #333;
  color: #fff;
  padding: 20px;
  text-align: center;
}