* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', sans-serif;
}
body {
  background-color: #f0fff5;
  color: #0b3d0b;
}
header {
  background: linear-gradient(to right, #0b3d0b, #1db954);
  color: white;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 1rem 2rem;
}
header .logo-title {
  display: flex;
  align-items: center;
}
header img {
  width: 100px;
  height: auto;
  margin-right: 1rem;
}
nav {
  margin-top: 1rem;
}
nav a {
  color: white;
  margin-right: 1rem;
  text-decoration: none;
  font-weight: bold;
}
.container {
  background-color: #ffffff;
  padding: 2rem;
  margin: 2rem auto;
  border-radius: 8px;
  max-width: 960px;
  box-shadow: 0 0 10px rgba(0, 128, 0, 0.1);
}
a.button {
  background-color: #1db954;
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
}
footer {
  background-color: #0b3d0b;
  color: white;
  text-align: center;
  padding: 1rem;
}