[data-theme="winter"] {
  --hero-image: url('../assets/images/themes/winter.jpg');
  --hero-image-opacity: 0.12;
}

[data-theme="spring"] {
  --hero-image: url('../assets/images/themes/spring.jpg');
  --hero-image-opacity: 0.12;
}

[data-theme="summer"] {
  --hero-image: url('../assets/images/themes/summer.jpg');
  --hero-image-opacity: 0.14;
}

[data-theme="autumn"] {
  --hero-image: url('../assets/images/themes/autumn.jpg');
  --hero-image-opacity: 0.12;
}