nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
}

nav ul li a {
  font-weight: 600;
}

.center-text {
  max-width: 850px;
  margin: auto;
  text-align: center;
  font-size: 16px;
  line-height: 1.6;
}

form {
  background: #fff;
  padding: 30px;
  border-radius: 6px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}