sismica/liferay-plugins-sdk-6.2/themes/portos-private-theme/docroot/css/component/parallax.scss

.aui {
  .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;
      }
    }
  }
}