:root {
    ---blanco: #ffffff;
    ---oscuro: #212121;
    ---primario: #ffc107;
    ---secundario: #0097a7;
    ---gris: #757575;
    ---funte-principal: 3.8rem;
    ---color-letras: rgb(50, 25, 250);
    ---fondo-celda: #f1e4ef;
    --ampituDelInput: 2rem
}


html {
    font-size: 62.5%;
    box-sizing: border-box;
}

body {
    font-size: 16px;
    font-family: "Fira", sans-serif;
}

h1 {
    font-size: 3.8rem;
}

h2 {
    font-size: 2.8rem;
}

h3 {

    font-size: 1.8rem;
}

h1,
h2,
h3 {
    text-align: center;
}

.blink_me {
    animation: blinker 1s linear infinite;
}

@keyframes blinker {
    50% {
        opacity: 0;
    }
}


.contenedor {
    max-width: 120rem;
    margin: 0 auto;
}

.nav-bg {

    background-color: var(---secundario);
}

.navegacion-principal {

    display: flex;
    flex-direction: column;

}

@media(min-width:768px) {
    .navegacion-principal {
        flex-direction: row;
        justify-content: space-between;
    }
}

.navegacion-principal a {
    display: block;
    text-align: center;
    color: var(---blanco);
    text-decoration: none;
    font-size: 2rem;
    font-weight: bold;
    padding: 1rem;
}

.navegacion-principal a:hover {
    background-color: var(---primario);
    color: var(---oscuro);
}



.sombra {
    color: var(---secundario);
    -webkit-box-shadow: 2px 0px 13px 0px rgba(176, 173, 176, 0.69);
    -moz-box-shadow: 2px 0px 13px 0px rgba(176, 173, 176, 0.69);
    box-shadow: 2px 0px 13px 0px rgba(176, 173, 176, 0.69);
    background-color: #fdfdf7;
    padding: 2rem;
    border-radius: 1rem;
    width: 90%;
    height: auto;
    margin: 0 5rem 0;
}





.item1 {
    grid-row-start: 4;
    grid-row-end: 5;
    display: flex;
    justify-content: center;
}


.menos {
    width: 35%;
    height: .08rem;
    background-color: var(---secundario);

    margin-left: 1rem;
    margin-right: auto;
}

.item2 {
    grid-row-start: 4;
    grid-column-start: 2;
    display: flex;
    justify-content: center;
}

.item3 {
    grid-row-start: 4;
    grid-column-start: 3;
    display: flex;
    justify-content: center;
}

.item4 {
    grid-row-start: 3;
    grid-column-start: 4;
    display: flex;
    justify-content: center;
}


.item5 {

    grid-column: 4;
    grid-row: 4;
}

.item6 {
    grid-column: 4;
    grid-row: 5;
    display: flex;
    justify-content: center;
}

.item7 {
    grid-column: 5;
    grid-row: 4;
    display: flex;
    justify-content: center;
}

.item8 {
    grid-column: 6/9;
    grid-row: 4;

}



.item10 {
    grid-column: 7;
    grid-row: 3;
    display: flex;
    justify-content: center;
}




input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {

    -webkit-appearance: none;
    margin: 0;

}

input[type="number"] {
    -moz-appearance: textfield;
}

.item13 {
    grid-column: 5;
    grid-row: 8;
    display: flex;
    justify-content: center;
}

.item14 {
    grid-column: 7;
    grid-row: 8;

}



.item16 {
    grid-column: 7;
    grid-row: 9;
    display: flex;
    justify-content: center;

}



hr {
    height: .1rem;
    background-color: var(---secundario);

    margin-left: auto;
    margin-right: auto;
}

.w-100 {
    width: 100%;
}

.alinear-derecha {
    display: flex;
    justify-content: flex-end;
}

.boton {
    background-color: var(---secundario);
    color: var(---blanco);
    padding: 1rem 3rem;
    margin-top: 3rem;
    font-size: 1.5rem;
    text-decoration: none;
    text-transform: uppercase;
    font-weight: bold;
    border-radius: .5rem;
    width: 90%;
    text-align: center;
    border: none;
}

@media (min-width: 768px) {
    .boton {
        width: auto;
    }
}

.boton:hover {
    cursor: pointer;
}

@media (min-width: 768px) {
    .w-100 {
        width: auto;
    }
}

#botonComprueba {
    grid-column: 7/9;
    grid-row: 12;
}

.dentro_seccion {
    height: auto;
    margin-bottom: 10rem;
}

#para {
    display: flex;
    justify-content: center;
    margin: 0;
}

.item18 {
    grid-column: 2;
    grid-row: 3;
    display: flex;
    justify-content: center;
}

.item19 {
    grid-column: 2;
    grid-row: 5;
    display: flex;
    justify-content: center;
}

.dosColumnas {
    display: flex;
  
}

.reja {
    font-size: 1.7rem;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(10, 1fr);
    width: 80%;

}
.temario{
    display: flex;
    justify-content: center;
}
.item12 {
    text-align: center;
    max-width: var(--ampituDelInput);
    color: var(---secundario);
    border: none;
    outline: 0;

    grid-column: 7;
    grid-row: 5;
    display: flex;
    justify-content: center;
    background-color: var(---fondo-celda);
    border-radius: .4rem;

}

.item9 {
    text-align: center;
    max-width: var(--ampituDelInput);
    color: var(---secundario);
    border: none;
    outline: 0;

    grid-column: 6;
    grid-row: 3;
    display: flex;
    justify-content: center;
    background-color: var(---fondo-celda);
    border-radius: .4rem;
}

.item11 {
    text-align: center;
    max-width: var(--ampituDelInput);
    color: var(---secundario);
    border: none;
    outline: 0;

    grid-column: 8;
    grid-row: 3;
    display: flex;
    justify-content: center;
    background-color: var(---fondo-celda);
    border-radius: .4rem;
}

.item17 {
    grid-column: 6;
    grid-row: 8;
    display: flex;
    justify-content: center;
    background-color: var(---fondo-celda);
    border-radius: .4rem;
    text-align: center;
    max-width: var(--ampituDelInput);
    color: var(---secundario);
    border: none;
    outline: 0;
}

.item15 {
    grid-column: 7;
    grid-row: 7;
    display: flex;
    justify-content: center;
    background-color: var(---fondo-celda);
    border-radius: .4rem;
    text-align: center;
    max-width: var(--ampituDelInput);
    color: var(---secundario);
    border: none;
    outline: 0;
}