.parallax-fondo {
    background-image: url('/img/fondo_2.jpg');
    background-repeat: no-repeat;
    background-position: center top;
    background-size: cover;
    background-attachment: fixed;
    background-blend-mode: lighten;
    min-height: 150px;
    position: relative;
    z-index: 1;
    border-radius: 20px;
    transition: all 0.4s cubic-bezier(0.075, 0.82, 0.165, 1);
  }