body {
  font-family: 'Open Sans', sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background-color: #333;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
}

header h1 {
  margin: 0;
  font-size: 1.5rem;
}

header nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
}

header nav a {
  color: #fff;
  display: block;
  padding: 1rem;
  text-decoration: none;
  transition: all 0.2s ease-in-out;
}

header nav a:hover {
  color: #000;
  background-color: #fff;
}

main {
  padding: 2rem;
}

section {
  background-color: #f2f2f2;
  padding: 2rem;
  margin-bottom: 2rem;
  border-radius: 5px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

footer {
  background-color: #333;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem;
}

footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
}

footer li {
  margin-right: 1rem;
}

footer img {
  height: 1.5rem;
  width: 1.5rem;
}

.show {
  display: block;
}
button.download-button,button {
  background-color: #2196F3;
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 10px 15px;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
}

button.download-button:hover {
  background-color: #1E88E5;
}
a {
  color: #2196F3;
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: #1E88E5;
}