html,
body {
    height: 100%;

}

body {
    display: flex;
    align-items: center;

}

.form-signin {
    width: 100%;
    max-width: 450px;
    margin: auto;
}

body {
    background-image: url('/images/fondo.png');
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
}

.parallax-container {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.parallax-background {
  background-image: url('<?= base_url("images/fondo.png") ?>');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 120%; /* más alto para el efecto */
  transform: translateY(0);
  transition: transform 0.1s ease-out;
  z-index: -1;
}

.content {
  position: relative;
  z-index: 1;
  padding: 50px;
  color: white;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
    overflow: hidden;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}