.parallax-frase{
 height: 250px;
 background-image: url("/adminyserv/gesuniv/div_ext/dir_fomento_a_la_lectura/garza-lectora/images/GL.png");
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  
}

* { margin: 0; padding: 0; }
html, body { font: normal 400 16px/1.5 'Roboto', sans-serif; }

.parallax-background-container { 
    height: 100vh;
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 10px rgba(0,0,0,0.6);
}

.section-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
    z-index: -1;
}