.terminados {
  background: 
    /* linear-gradient(rgba(0, 0, 0, 0.603), rgba(0,0,0,0.603)),  */
    url("../images/terminados/BANNER_TERMINADOSok-3.png");
  background-attachment: fixed;
  background-size: cover;
  background-position: top center;
}

 

.martinezdelrio {
    background: 
    linear-gradient(rgba(0, 0, 0, 0.603), rgba(0,0,0,0.603)), 
    url("../images/martinezdelrio/MARTINEZ-DEL-RIO-54.jpg");
  background-attachment: fixed;
  background-size: cover;
  background-position: top center;
}

.martincarrera {
    background: 
    linear-gradient(rgba(0, 0, 0, 0.603), rgba(0,0,0,0.603)), 
    url("../images/martincarrera/MARTÍN-CARRERA-23.jpg");
  background-attachment: fixed;
  background-size: cover;
  background-position: top center;
}

.drvertiz {
  background: 
    linear-gradient(rgba(0, 0, 0, 0.603), rgba(0,0,0,0.603)), 
    url("../images/drvertiz/DR.-VERTIZ-25.jpg");
  background-attachment: fixed;
  background-size: cover;
  background-position: top center;
    /* background-image: url(..//images/drvertiz/PORTADA-PROYECTO-DR-VERTIZ.png);
    background-attachment: fixed;
    background-size: cover;
    background-position: top center;
    z-index: -1; */
}

.zempoala {
    background-image: url(..//images/zempoala/PORTADA-PROYECTO-ZEMPOALA.png);
    background-attachment: fixed;
    background-size: cover;
    background-position: top center;
    z-index: -1;
}

.calle4 {
    background-image: url(..//images/calle4/PORTADA_PROYECTO.png);
    background-attachment: fixed;
    background-size: cover;
    background-position: top center;
    z-index: -1;
}

.guillermo {
    background-image: url(..//images/guillermoprieto/PORTADA-PROYECTOS-GUILLERMO.png);
    background-attachment: fixed;
    background-size: cover;
    background-position: top center;
    z-index: -1;
}

.avrevolucion {
    background-image: url(..//images/avrevolucion/PORTADA-PROYECTOS-REVOLUCION.png);
    background-attachment: fixed;
    background-size: cover;
    background-position: top center;
    z-index: -1;
}

.chicle {
    background-image: url(..//images/chicle/PORTADA-PROYECTOS-CHICLE.png);
    background-attachment: fixed;
    background-size: cover;
    background-position: top center;
    z-index: -1;
}

.edison {
    background-image: url(..//images/edison/PORTADA-PROYECTO-EDISON.png);
    background-attachment: fixed;
    background-size: cover;
    background-position: top center;
    z-index: -1;
}

.icazbalceta {
    background-image: url(..//images/icazbalceta/PORTADA-PROYECTOS-ICAZBALCETA.png);
    background-attachment: fixed;
    background-size: cover;
    background-position: top center;
    z-index: -1;
}

.oriente {
    background-image: url(..//images/oriente/PORTADA-PROYECTO-SUR.png);
    background-attachment: fixed;
    background-size: cover;
    background-position: top center;
    z-index: -1;
}

/* Línea horizontal continua detrás de los botones */
.nav-tabs {
  position: relative;
  /* border-bottom: 2px solid #000; la línea continua */
border: none;
 
}
 .espacio {
      margin: 20px;
    }

/* En pantallas menores a 992px (laptops/tablets) */
@media (max-width: 990px) {
  .espacio {
     flex-direction: column;
    margin: 0px;
  }
}


/* Quitar la línea inferior individual de cada botón */
.nav-tabs .nav-link {
  border: none; 
  border-radius: 0;
  margin-right: 20px; /* espacio entre botones */
}