#lateralizq {
width:10%;
height:100%;
position:absolute;
top:0px;
left:0px;
}
#contenedor {
width: 80%;
height:100%;
position:absolute;
top:0;
left:10%;
border:1px solid black;
}
#lateralder {
width: 10%;
height:100%;
position:absolute;
top:0;
right: 0;
}
#barraizq
{
float:right;
width:10px;
height:100%;
background: -moz-linear-gradient(left, rgba(255,255,255,0) 0%, rgba(255,255,255,0.33) 50%, rgba(0,0,0,0.65) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, right top, color-stop(0%,rgba(255,255,255,0)), color-stop(50%,rgba(255,255,255,0.33)), color-stop(100%,rgba(0,0,0,0.65))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(left, rgba(255,255,255,0) 0%,rgba(255,255,255,0.33) 50%,rgba(0,0,0,0.65) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(left, rgba(255,255,255,0) 0%,rgba(255,255,255,0.33) 50%,rgba(0,0,0,0.65) 100%); /* Opera11.10+ */
background: -ms-linear-gradient(left, rgba(255,255,255,0) 0%,rgba(255,255,255,0.33) 50%,rgba(0,0,0,0.65) 100%); /* IE10+ */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00ffffff', endColorstr='#a6000000',GradientType=1 ); /* IE6-9 */
background: linear-gradient(left, rgba(255,255,255,0) 0%,rgba(255,255,255,0.33) 50%,rgba(0,0,0,0.65) 100%); /* W3C */
}
#barrader {
float:left;
width:10px;
height:100%;
background: -moz-linear-gradient(left, rgba(0,0,0,0.65) 0%, rgba(255,255,255,0.33) 50%, rgba(255,255,255,0) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, right top, color-stop(0%,rgba(0,0,0,0.65)), color-stop(50%,rgba(255,255,255,0.33)), color-stop(100%,rgba(255,255,255,0))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(left, rgba(0,0,0,0.65) 0%,rgba(255,255,255,0.33) 50%,rgba(255,255,255,0) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(left, rgba(0,0,0,0.65) 0%,rgba(255,255,255,0.33) 50%,rgba(255,255,255,0) 100%); /* Opera11.10+ */
background: -ms-linear-gradient(left, rgba(0,0,0,0.65) 0%,rgba(255,255,255,0.33) 50%,rgba(255,255,255,0) 100%); /* IE10+ */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#a6000000', endColorstr='#00ffffff',GradientType=1 ); /* IE6-9 */
background: linear-gradient(left, rgba(0,0,0,0.65) 0%,rgba(255,255,255,0.33) 50%,rgba(255,255,255,0) 100%); /* W3C */
}
#nav {
width:100px;
height:100%;
float:left;
border: 1px solid black;
}
#cabecera {
width:100%;
height:125px;
background-color: black;
}
#contenido {
width:100%
height:100%;
}