paesaggistica/liferay-plugins-sdk-6.2/themes/portos-public-theme/docroot/css/component/parallax.scss

.parallax-container {
  height: 60vh;
  position: relative;
  overflow: hidden;

  @media (max-width: $tablet) {
    height: 40vh;
  }
  @media (max-width: $mobile) {
    height: 40vh;
  }

  .parallax {
    background-size: cover;
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-position: center center;
    height: 100%;

    @media (max-width: $tablet) {
      background-size: inherit;
    }
    @media (max-width: $mobile) {
      background-size: inherit;
    }
  }
}