.Presentacion {

    background-color: aqua;
    border-style: solid;
    border-color: blueviolet;
    text-align: center;
    color: rgb(187, 165, 44);

}
header {
    background-color: aqua;
    border-style: solid;
    border-color: blueviolet;
}

.introduccion{
    background-color: aquamarine;
    border-style: solid;
    border-color: blueviolet;
}

.integrantes{
    background-color: rgb(17, 187, 187);
    color: darkgoldenrod;
    
}

.estudio {

    background-color: rgb(71, 71, 172);
    text-align: center;
    color: darkgoldenrod;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    color: white;
    background-color: aqua;
    border-style: solid;
    border-color: blueviolet;
    text-align: center;
}

.Materias {

    background-color: aqua;
    border-style: solid;
    border-color: azure;
    text-align: center;
    color: antiquewhite;
    font-family: 'Times New Roman', Times, serif;
    font-size: 12em;
}

footer {

    background-color: cornflowerblue;
    border-style: solid;
    border-color: aquamarine;
    text-align: center;
    color: antiquewhite;
}

header{
    background-color: aqua;    
    border-style: dashed;
    border-color: aliceblue;
}