body{
    text-align: center;
    background-color: rgba(0, 195, 255,0.3);
}

#contenidoPrincipal{
    background-color: rgba(0, 85, 255, 0.5);
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 0 20px black; 
}

#contenidoPrincipal form{
    display: flex;
    flex-flow: column;
    justify-content: center;
    align-items: center;
    
}

#contenidoPrincipal form label{
    margin-top: 10px;
    color: white;
}

main{
    display: flex;
    justify-content: center;
    align-items: center;
}

#cajaAsignaturas{
    display: grid;
    grid-template-columns: repeat(2, 1fr);
}