@media (min-width:294px)  {
    #contenido{
        width: 90%;
        /*margin-left: -20px;*/
        /*margin-left: -50px;*/
        margin-left: -40px;
    }   
}    

/* smartphones, iPhone, portrait 480x320 phones */
@media (min-width:320px)  { 
    #contenido {
 /*       width: 265px;*/
        width: 255px;
        padding:0px 6px 6px 6px;
 /*       margin-left: -50px;*/
    }
    img{
        width: auto;
    }
}

/* portrait e-readers (Nook/Kindle), smaller tablets @ 600 or @ 640 wide. */
@media (min-width:481px){
    #contenido{
        /*width: 490px;*/
        width: 430px;
    }
}

@media (min-width: 560px){
    #contenido{
        width: 520px;
    }
}

/* portrait tablets, portrait iPad, landscape e-readers, landscape 800x480 or 854x480 phones */
@media (min-width:641px){
    #contenido{
        /*width: 840px;*/
        width: 600px;
        margin-left: -100px;
    }
}

@media (min-width:641px){
    #contenido{
        width: 595px;
    }   
} 

@media (min-width:810px){
    #contenido{
        width: 740px;
    }
    #cabecera .atencion{
        height:52px;
        float:left;
        padding:45px 0px 0 0;
        margin-left: -25px; 
        margin-right: 20px;
        margin-top: 0px;
        display: block;
    }
    #cabecera .logo_comunidad{
        display: block;
    }
    #cabecera #contenedoraGoogle { 
        display:inline; 
        padding-left: 0em;
        margin: 0 1.6em 0 2em;
    }       
}    

/* tablet, landscape iPad, lo-res laptops ands desktops */
@media (min-width:961px){
    #contenido {
        width: 840px;
    }
    #cabecera .atencion{
        height:52px;
        float:left;
        padding:45px 0px 0 0;
        margin-left: -25px; 
        margin-right: 20px;
        margin-top: 0px;
        display: block;
    }
    #cabecera #contenedoraGoogle{
        padding-left:2em;
        margin: 0 7.6em 0 2em;
    }
}

/* big landscape tablets, laptops, and desktops */
@media (min-width:1025px){
    #ContenedoraCentral{
        width:auto;
        background-color:#fff;
        float:left;
    }
    #contenedora{
        margin:0 auto;
        width:840px;
        margin:0 auto
    }
    #contenido{
    /*    width:840px;*/
        width:810px;
        margin:0 auto;
        border-bottom: solid 1px #E2E2E2;
    }
}

/* hi-res laptops and desktops */
@media (min-width:1281px){
   
}