/*!
 * Start Bootstrap - Scrolling Nav (https://startbootstrap.com/template-overviews/scrolling-nav)
 * Copyright 2013-2019 Start Bootstrap
 * Licensed under MIT (https://github.com/BlackrockDigital/startbootstrap-scrolling-nav/blob/master/LICENSE)
 */
header {
  padding: 156px 0 100px;
}

section {
  padding: 96px 0;
}

.atras {
  background-image: url('../img/atras.jpg');
}

.atrasDos {
  background-image: url('../img/atras3.jpg');
  background-size: cover;
}

.atrasCP {
  background-image: url('../img/fondo-cat.jpg');
  background-size: cover;
}

.atrasNueve {
  background-image: url('../img/atras9.jpg');
  background-size: cover;
}