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

body {
    /* background-color: #fafafa; */
    background-image: url(../images/background.jpg);
    display: grid;
    height: 100dvh;
    grid-template-rows: auto 1fr auto;
}

.tamanio-boton {
    width: 40px;
    height: 40px;
}