header {
    margin-top:1%;
    margin-bottom:1%;
    height:8%;
}

footer {
    margin-top:1%;
    margin-bottom:1%;
    height:8%;
}

#ImagenFirma {
    margin-top:2%;
    margin-bottom:2%;
}

#ImagenFirma2 {
    width:100%;
    margin-top:2%;
    margin-bottom:2%;
}

#aImagen, #ImagenFirma2 {
    /*background-color:#E8E8E8;*/
    background-color:#d9edf7;
    border-radius:4px;
    border:1px solid #31708f;
}

/*#aImagen {
    background-image:url("../imagenes/fondoFirma.jpg");
}*/

.alert-firma {
  background-image: -webkit-linear-gradient(top, #333333 0%, #F6F6F6 100%);
  background-image:      -o-linear-gradient(top, #333333 0%, #F6F6F6 100%);
  background-image: -webkit-gradient(linear, left top, left bottom, from(#333333), to(#F6F6F6));
  background-image:         linear-gradient(to bottom, #333333 0%, #F6F6F6 100%);
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#333333', endColorstr='#F6F6F6', GradientType=0);
  background-repeat: repeat-x;
  border-color: #9acfea;
}