* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

#imgsup {
    background-color: antiquewhite;
    width: 25px;
    text-align: center;
}

h1 {
    color: aliceblue;
    text-align: center;
}

li {
    font-size: 20px;
    list-style: none;
    margin: 20px;
    text-decoration: none;
    text-align: center;
}

.nav {

    color: white;
    text-decoration: none;
    margin: 0;
    word-spacing: 260px;
}

header {
    background-color: rgb(8, 8, 70);
}

main {
    background-color: darkcyan;
}

.practica {
    background-color: rgb(18, 27, 43);
    margin: 10px;
    padding: 5%;
    width: 30%;
}

.titulos {
    color: rgb(201, 202, 213);
    text-decoration: none;
    text-align: center;

}

body {
    background-color: black;
}