* {
    box-sizing: border-box;
}

#principal {
    width: 80%;
    margin: auto;
}

body {
    color: azure;
    text-align: center;
    font-weight: bold;
}

footer{
    min-height: 400px;
}

.fila {
    display: flex;
    flex-wrap: wrap;
    border: 1px solid orangered;
}

.columna {
    padding: 10px 15px;
    width: 100% ;
}

.columna > div{
    background-color: rgb(72, 118, 161);
    border-radius: 10px;
    border: 3px rgb(148, 132, 184) solid;
}

.columna .columna > div{
    background-color: cadetblue;
}

img{
    width: 100%;
}
/* disposicion */
.horizontal-final{
    justify-content: flex-end;
}

.horizontal-centro{
    justify-content: center;
}

.horizontal-spacearound{
    justify-content: space-around;
}

.horizontal-spacebetween{
    justify-content: space-between;
}

.vertical-centrado{
    align-items: center;
}

.vertical-stretch{
    align-items: stretch;
}
/* Media Queries movil grande */
@media screen and (min-width: 576px){
    .movil-doce {
        width: 100%;
    }
    
    .movil-once {
        width: 91.6667%;
        /* 11/12 */
    }
    
    .movil-diez {
        width: 83.3333%;
        /* 10/12 */
    }
    
    .movil-nueve {
        width: 75%;
        /* 9/12 */
    }
    
    .movil-ocho {
        width: 66.6667%;
        /* 8/12 */
    }
    
    .movil-siete {
        width: 58.3333%;
        /* 7/12 */
    }
    
    .movil-seis {
        width: 50%;
        /* 6/12 */
    }
    
    .movil-cinco {
        width: 41.6667%;
        /* 5/12 */
    }
    
    .movil-cuatro {
        width: 33.3333%;
        /* 4/12 */
    }
    
    .movil-tres {
        width: 25%;
        /* 3/12 */
    }
    
    .movil-dos {
        width: 16.6667%;
        /* 2/12 */
    }
    
    .movil-uno {
        width: 8.3333%;
        /* 1/12 */
    }
}
/* Tablet vertical */
@media screen and (min-width: 768px){
    .tablet-v-doce {
        width: 100%;
    }
    
    .tablet-v-once {
        width: 91.6667%;
        /* 11/12 */
    }
    
    .tablet-v-diez {
        width: 83.3333%;
        /* 10/12 */
    }
    
    .tablet-v-nueve {
        width: 75%;
        /* 9/12 */
    }
    
    .tablet-v-ocho {
        width: 66.6667%;
        /* 8/12 */
    }
    
    .tablet-v-siete {
        width: 58.3333%;
        /* 7/12 */
    }
    
    .tablet-v-seis {
        width: 50%;
        /* 6/12 */
    }
    
    .tablet-v-cinco {
        width: 41.6667%;
        /* 5/12 */
    }
    
    .tablet-v-cuatro {
        width: 33.3333%;
        /* 4/12 */
    }
    
    .tablet-v-tres {
        width: 25%;
        /* 3/12 */
    }
    
    .tablet-v-dos {
        width: 16.6667%;
        /* 2/12 */
    }
    
    .tablet-v-uno {
        width: 8.3333%;
        /* 1/12 */
    }
}
/* Tablet horizontal */
@media screen and (min-width: 992px){
    .tablet-h-doce {
        width: 100%;
    }
    
    .tablet-h-once {
        width: 91.6667%;
        /* 11/12 */
    }
    
    .tablet-h-diez {
        width: 83.3333%;
        /* 10/12 */
    }
    
    .tablet-h-nueve {
        width: 75%;
        /* 9/12 */
    }
    
    .tablet-h-ocho {
        width: 66.6667%;
        /* 8/12 */
    }
    
    .tablet-h-siete {
        width: 58.3333%;
        /* 7/12 */
    }
    
    .tablet-h-seis {
        width: 50%;
        /* 6/12 */
    }
    
    .tablet-h-cinco {
        width: 41.6667%;
        /* 5/12 */
    }
    
    .tablet-h-cuatro {
        width: 33.3333%;
        /* 4/12 */
    }
    
    .tablet-h-tres {
        width: 25%;
        /* 3/12 */
    }
    
    .tablet-h-dos {
        width: 16.6667%;
        /* 2/12 */
    }
    
    .tablet-h-uno {
        width: 8.3333%;
        /* 1/12 */
    }
}
/* Laptop */
@media screen and (min-width: 1200px){
    .laptop-doce {
        width: 100%;
    }
    
    .laptop-once {
        width: 91.6667%;
        /* 11/12 */
    }
    
    .laptop-diez {
        width: 83.3333%;
        /* 10/12 */
    }
    
    .laptop-nueve {
        width: 75%;
        /* 9/12 */
    }
    
    .laptop-ocho {
        width: 66.6667%;
        /* 8/12 */
    }
    
    .laptop-siete {
        width: 58.3333%;
        /* 7/12 */
    }
    
    .laptop-seis {
        width: 50%;
        /* 6/12 */
    }
    
    .laptop-cinco {
        width: 41.6667%;
        /* 5/12 */
    }
    
    .laptop-cuatro {
        width: 33.3333%;
        /* 4/12 */
    }
    
    .laptop-tres {
        width: 25%;
        /* 3/12 */
    }
    
    .laptop-dos {
        width: 16.6667%;
        /* 2/12 */
    }
    
    .laptop-uno {
        width: 8.3333%;
        /* 1/12 */
    }
}
/* desktop */
@media screen and (min-width: 1400px){
    .desktop-doce {
        width: 100%;
    }
    
    .desktop-once {
        width: 91.6667%;
        /* 11/12 */
    }
    
    .desktop-diez {
        width: 83.3333%;
        /* 10/12 */
    }
    
    .desktop-nueve {
        width: 75%;
        /* 9/12 */
    }
    
    .desktop-ocho {
        width: 66.6667%;
        /* 8/12 */
    }
    
    .desktop-siete {
        width: 58.3333%;
        /* 7/12 */
    }
    
    .desktop-seis {
        width: 50%;
        /* 6/12 */
    }
    
    .desktop-cinco {
        width: 41.6667%;
        /* 5/12 */
    }
    
    .desktop-cuatro {
        width: 33.3333%;
        /* 4/12 */
    }
    
    .desktop-tres {
        width: 25%;
        /* 3/12 */
    }
    
    .desktop-dos {
        width: 16.6667%;
        /* 2/12 */
    }
    
    .desktop-uno {
        width: 8.3333%;
        /* 1/12 */
    }
}