@import url(https://fonts.googleapis.com/css?family=Arimo:400,700);

* {
    box-sizing: border-box;
    padding: 0;
    margin: 0;
    font-family: Arimo, sans-serif;
}

body {
    background-image: url(imagenes/wallpaper_cel72.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position:center;
}

header h1{
    color: black;
    text-align: center;
    margin: 0.5em 0;
    text-shadow: 0em 0em 5em;
    font-size: 1.7em;
}

header nav ul {
    list-style: none;
    background-color: rgba(0, 0, 0, 0.8);
    padding: 0.5em 0;
    text-align: center;
    box-shadow: 0em 0em 1.5em;
}

header nav ul li {
    display: inline-block;
    margin-right: 1em;
}

header nav ul li a {
    color: white;
    font-size: 0.8em;
    list-style: none;
    text-decoration: none;
    margin: 0 auto;
}


#pagina main img {
    width: 13em;
    margin: 1.7em auto 1em auto;
    border-radius: 50%;
    box-shadow: 0em 0em 2em;
    color: black;
}

main {
    text-align: center;
    color: white;
    width: 100%;
}

main h1 {
    font-size: 1.5em;
}

main h2 {
    font-size: 1em;
    font-weight: 100;
}

aside {
    margin-top: 1.3em;
    width: 80%;
    margin-left: 10%;
}

h3 {
    text-decoration: underline;
}

aside ul {
    list-style: none;
    line-height: 1.3em;
}

#dgpc {
    margin: 1em 0;
    width: 80%;
    margin-left: 10%;
}

#dgpc p {
    font-size: 0.9em; 
    margin: 0.5em 0;
}


footer ul {
    text-align: center;
    list-style: none;
    margin-top: 17em;
    padding: 1em 0;
}

footer ul li {
    display: inline-block;
}

footer ul li a {
    color: white;
    text-decoration: none;
    margin: 0 1em;
    font-size: 0.8em;

}

footer p {
    color: darkgray;
    font-size: 0.6em;
    text-align: center;
    width: 90%;
    margin: 0 auto;
}

@media screen and (min-width:40em) {
   
header nav ul li a {
    color: white;
    font-size: 0.8em;
    list-style: none;
    text-decoration: none;
    margin: 1.6em;
    }
    
    #contenido {
        width: 90%;
        margin: 0 5%;
    }
    
    aside {
        color: black;
        padding: 1em 0.5em;
        margin: 3em 0;
        float: left;
        width: 45%;
        line-height: 1.5em;
        border-top-style: solid;
        border-top-width: 0.3em;
         margin-left: 2%;
        margin-right: 2%;
    }
    
    #dgpc {
        float: left;
        width: 45%;
        margin-top: 3em; 
        padding: 1em 0.5em;
        border-top-style: solid;
        border-top-width: 0.3em;
        margin-left: 2%;
        margin-right: 2%;
    }
    
    footer {
        overflow: none;
        clear: both;
        margin-bottom: 1em;
        width: 70%;
        margin: 35em 15% 0.5em 15%;
    }
    
}

@media screen and (min-width:67em) {
    
    header nav ul li a {
    color: white;
    font-size: 0.8em;
    list-style: none;
    text-decoration: none;
    margin: 1.6em;
    }
    
    #contenido {
        width: 90%;
        margin: 0 5%;
    }
    
    body {
    background-image: url(imagenes/wallpaper72.jpg);
    }
    
    main {
        float: left;
        width: 30%;
        margin: 0; 
        padding: 0;
    }
    
    aside {
        color: black;
        padding: 1em 0.5em;
        margin: 3em 0;
        float: left;
        width: 30%;
        line-height: 1.5em;
        border-top-style: solid;
        border-top-width: 0.3em;
    }
    
    #dgpc {
        float: left;
        width: 30%;
        margin: 3em; 
        padding: 1em 0.5em;
        border-top-style: solid;
        border-top-width: 0.3em;
    }
    
    footer {
        overflow: none;
        clear: both;
        margin-bottom: 1em;
        width: 70%;
        margin: 49% 15% 0.5em 15%;
    }

}