body{
background-color: lightblue;
}
header{
position: fixed;
top: 0%;
left: 0%;
height: 10%;
width: 100%;
text-align: center;
}
nav{
position: fixed;
top: 10%;
left: 0%;
height: 10%;
width: 100%;
text-align: center;
}
main{
position: fixed;
top: 20%;
left: 0%;
height: 70%;
width: 100%;
text-align: justify;
padding-left: 5%;
overflow: auto;
}
footer{
position: fixed;
top: 90%;
left: 0%;
height: 10%;
width: 100%;
text-align: center;
}
.azul{
    font-size: 120%;
    color: blue;
}
.verd{
    font-size: 120%;
    color: green;
}
.verm{
    font-size: 120%;
    color: red;
}