*{
margin: 0;
padding: 0;
}


.pagina {max-width: 960px;
         margin: 0 auto;}

nav {width: 100%;
    height: 76px;
    margin: 0px auto;
    background-image: url(img/bgnav.png);
}


.boton  {width: 90px;
        height: 25px;

        float:left;
        margin: 20px 5px;
        font-size: 0.8rem;
        padding: 25px 0 0 0px;
    background-color:#ddd;
    text-align: center;
        border-radius: 10px;
}

.botonalumno  {width: 130px;
        height: 25px;

        float:right;
        margin: 20px 1px;
        font-size: 0.8rem;
        padding-top: 25px;
        padding-right: 10px;
        text-align: right;
        link: #fff;
        background: #fff;
                  border-radius: 10px;
}



body   {background: #fff;
        margin: 0;
        font-size: 16px;}

header {width: 100%;
        height: 37px;
        background: #37b;
        margin: 0px auto;
    
        
        color: #fff;
       /* text-align: center;*/
        font-family:"georgia", sans-serif;
}



main   {width: 100%;
        height: 710px;
        background: #fff;
        }

footer {width: 100%;
        height: 50px;
        background: #fff;
        margin:22px auto;
        text-align:center;
        color: #87888A;
        font-size: 0.8rem;}

section {width: 100%;
         height: 390px;
         background: #133794;
         margin: 75px auto 0px auto;
    background-image: url(img/upfeathers.png);
}

aside {width: 100%;
       height: 300px;
       background: #b0ddf5;
       margin: 6px auto;
       text-align:center;
       font-family: "georgia", sans-serif;
       color: #133794;
       padding-top: 15px;
/*float:left*/}


    
article   {width: 100%;
                   height: 327px;
                    text-align:center;
 
                   margin: 0 0 0 0;
    padding: 50px 0px 0px 0px;
                   font-family: "Myriad Pro", sans-serif;
                   color: #666;
                   font-size: 1rem;
    
}

.cargo {
    font-weight: bold;
    font-size: 1.2rem;
}