body{
    background:  #036;
}
header{
    max-width: auto;
    min-height: 139px;
    margin: 0 auto;
    border-radius: 0px 0px 0 0;
/* Permalink - use to edit and share this gradient: https://colorzilla.com/gradient-editor/#ffffff+0,f6f6f6+47,ededed+100;White+3D+%231 */
background: rgb(255,255,255); /* Old browsers */
background: -moz-linear-gradient(top,  rgba(255,255,255,1) 0%, rgba(246,246,246,1) 47%, rgba(237,237,237,1) 100%); /* FF3.6-15 */
background: -webkit-linear-gradient(top,  rgba(255,255,255,1) 0%,rgba(246,246,246,1) 47%,rgba(237,237,237,1) 100%); /* Chrome10-25,Safari5.1-6 */
background: linear-gradient(to bottom,  rgba(255,255,255,1) 0%,rgba(246,246,246,1) 47%,rgba(237,237,237,1) 100%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#ededed',GradientType=0 ); /* IE6-9 */

}

nav{
 
    max-width: 230px;
    min-height: 1784px;
    background-color:#e5e5e5;
    margin: 2px;
    float: left;
    border: 1px solid rgba(204, 204, 204, 0.418);

}


/*elemento en linea, convertir en bloque*/
nav a {
  
display: block;
color: #fff;
background: rgba(116, 109, 109, 0.342);
padding: 10px;
text-decoration: none;
border: 1px solid #ccc;
margin-bottom: 11px;
border-radius: 5px;
font-family: arial;
font-size: 17px;

}

aside{
    display: block;
    max-width: 200px;
    padding: 10px;
    min-height: 1784px;
    margin: 2px;
    background-color:#fffdfd44;
    float: right;
    text-decoration: none;
    border-radius: 5px;




}