body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  margin: 0;
  padding: 20px;
}

.checkout-wrapper {
  max-width: 1000px;
  margin: auto;
  background: #fff;
  padding: 40px;
  border-radius: 8px;
}

.checkout-wrapper h1 {
  text-align: center;
  margin-bottom: 30px;
  color: #333;
}

.checkout-container {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  justify-content: space-between;
}

form {
  flex: 1;
  min-width: 280px;
}

form h2 {
  margin-bottom: 20px;
}

form input {
  width: 100%;
  padding: 10px;
  margin-bottom: 12px;
  border-radius: 5px;
  border: 1px solid #ccc;
}

form button {
  width: 100%;
  background-color: black;
  color: white;
  padding: 12px;
  border: none;
  border-radius: 20px;
  font-size: 16px;
  cursor: pointer;
}

form button:hover {
  opacity: 0.85;
}

aside {
  flex: 0.6;
  min-width: 250px;
  border-left: 1px solid #ccc;
  padding-left: 20px;
}

aside h3 {
  margin-bottom: 10px;
}

aside p {
  margin: 10px 0;
  font-size: 16px;
}

.nav-btns {
  margin-top: 20px;
}

.nav-btns .btn {
  padding: 10px 15px;
  margin-right: 10px;
  border-radius: 20px;
  font-size: 14px;
  text-decoration: none;
  display: inline-block;
}

.nav-btns .btn.black {
  background: #000;
  color: #fff;
}

.nav-btns .btn:hover {
  opacity: 0.85;
}