body {
  background: steelblue; }

/*media screen */
@media screen and (min-width: 180px) {
  
   .menu a {
    font-size: 0.8em;
  }
  
  h2 {
    font-size: 0.9rem; }
  .txt-1 {
    font-size: 0.9rem; }
  #seccion1 {
    background: url(../fondos/f-1.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion2 {
    background: url(../fondos/f-2.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion3 {
    background: url(../fondos/f-3.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion4 {
    background: url(../fondos/f-4.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion5 {
    background: url(../fondos/f-5.jpg) fixed no-repeat;
    background-size: 100%; } 
  #seccion6 {
    background: url(../fondos/f-6.jpg) fixed no-repeat;
    background-size: 100%; } 
  #seccion7 {
    background: url(../fondos/f-7.jpg) fixed no-repeat;
    background-size: 100%; } 
  #seccion8 {
    background: url(../fondos/f8.jpg) fixed no-repeat;
    background-size: 100%; } 
  #seccion9 {
    background: url(../fondos/f9.jpg) fixed no-repeat;
    background-size: 100%; } 
  #seccion10 {
    background: url(../fondos/f10.jpg) fixed no-repeat;
    background-size: 100%; } 
    
    #seccion_contacto {
      background: url(../fondos/fcontacto.jpg) fixed no-repeat;
      background-size: 100%; }
}


@media screen and (min-width: 380px) {
   .menu a {
    font-size: 0.9em;
  }
  
  
  h2 {
    font-size: 1.1rem; }
  .txt-1 {
    font-size: 1rem; }
  #seccion1 {
    background: url(../fondos/f-1.jpg) fixed center no-repeat;
    background-size: 100% ; }
  #seccion2 {
    background: url(../fondos/f-2.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion3 {
    background: url(../fondos/f-3.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion4 {
    background: url(../fondos/f-4.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion5 {
    background: url(../fondos/f-5.jpg) fixed no-repeat;
    background-size: 100%; }
   #seccion6 {
      background: url(../fondos/f-6.jpg) fixed no-repeat;
      background-size: 100%; }
    #seccion7 {
        background: url(../fondos/f-7.jpg) fixed no-repeat;
        background-size: 100%; }
    #seccion8 {
        background: url(../fondos/f8.jpg) fixed no-repeat;
        background-size: 100%; }
    #seccion9 {
        background: url(../fondos/f9.jpg) fixed no-repeat;
        background-size: 100%; }
    #seccion10 {
        background: url(../fondos/f10.jpg) fixed no-repeat;
        background-size: 100%; }
        
    #seccion_contacto {
          background: url(../fondos/fcontacto.jpg) fixed no-repeat;
          background-size: 100%; }
  }
     

@media screen and (min-width: 700px) {
  
   .menu a {
    font-size: 1.2em;
  }
  
  h2 {
    font-size: 1.3rem; }
  #seccion1 {
    background: url(../fondos/fondo-1.jpg) fixed no-repeat;
    background-size:100%; }
  #seccion2 {
    background: url(../fondos/fondo-2.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion3 {
    background: url(../fondos/fondo-3.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion4 {
    background: url(../fondos/fondo-4.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion5 {
    background: url(../fondos/fondo-5.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion6 {
    background: url(../fondos/fondo-6.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion7 {
    background: url(../fondos/fondo-7.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion8 {
    background: url(../fondos/fondo8.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion9 {
    background: url(../fondos/fondo9.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion10 {
    background: url(../fondos/fondo10.jpg) fixed no-repeat;
    background-size: 100%; }
  #seccion_contacto {
    background: url(../fondos/fcontacto.jpg) fixed no-repeat;
    background-size: 100%; }
    
    }

.fondo {
  background: rgba(0, 0, 0, 0.4); }
  
.fondo1 {
  background: rgba(6, 40, 112, 0.8); }
  
 .cajamovil {
    width: var(--width1); 
    background: gray;}