* 
header {
    background-color:cornsilk;

    margin-top: 1rem;
    margin-bottom: 1rem;
    padding: o.7rem;
    border-width: 1.5rem;
    border-color: cadetblue;
    border-style:solid;
    text-align: center;
    color:darkcyan;
    font-family: "century gothic"; 
    
}

a {
    text-decoration: none;
    color: cadetblue;
}

ul {
    display: inline-flex;
    list-style: none;
}

li {
        border-right-color: cadetblue;
    border-right-style: inset;
    border-right-width: 2px;
    margin-right: 2rem;
    
}

.avatar {
    border-radius:100%;
}

main {
       text-align: center;
}
body {

    background-image: url(img/890d2e7f96f05ab97a4b028366d11e78.jpg);
    background-color: cornsilk;
     @import 'https://fonts.googleapis.com/css?family=Exo+2:200,400,700'; 
    font-family: "exo 2", sans-serif;

}
.datos{
    margin-top: 2rem;
    background-color: cornsilk;
    padding: 0.4rem;
    font-size: 1.2rem;
    text-align: center;
    color: darkcyan;
    
}
.materias {
    margin-top: 2rem;
    background-color: darkcyan;
    padding: 0.3rem;
    font-size: 1rem;
    text-align: center;
    color: cornsilk;
    
}
footer {
    text-align: center;
    font-size: .8rem;
    background-color: cornsilk;
    padding: 0.5rem;
}