body{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    --foo-color:#333333;
    --txt-color:#FFFFFF;
    --nav-color:#F3C311;
    --bag-color:#222222;
    --incople-color:#BD3936;
    font-family: monospace;
    background-color: var(--bag-color);
    color: var(--txt-color);
}

/* Header */

.header{
    color: var(--nav-color);
    height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 26px;
}

/* Comentario */
.coment{
    width: 100%;
    height: auto;
    border-bottom: 1px solid  var(--txt-color);
    text-align: center;
    font-size: 12px;
}
/* Reto Contenedor */
.reto{
   min-height: 450px ;
   display: flex;
   justify-content: center;
   align-items: center;
}
/* Reto */
 /* Contenedores */
 .conten{
    width: 96%;
    padding: 2%;
    margin: 2%;
    height: auto;
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
    background: var(--bag-color);
}

.pergamino{
    width: 450px;
    padding: 20px;
    margin: 20px;
    background-color:var(--txt-color);
    color: var(--bag-color);
    border-radius: 12px;
    box-shadow: 1px 1px 1px 1px var(--txt-color);
}

/* Textos */

h3{
    padding-bottom: 10px;
    font-size: 1.5rem;
    text-align: center;
}
h3:hover{
    animation: grande 3s linear ;
}
li{
    list-style-type:upper-roman;
    margin: 12px;
}
li:hover{
    color: rgb(228, 160, 84);
    transform: scale(1.2);
}

ul{
    width: 400px;
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* animaciones */

@keyframes grande {
    0%{
    transform: scale(1);
    color: #3f84;
    }
    50%{
        transform: scale(1.2);
        color: rgb(228, 160, 84);
    }
    100%{
        transform: scale(1);
        color: black;
    }
}

/* footer */

.foo{
    display: flex;
    align-items:center;
    justify-content: space-evenly;
    width: 100%;
    height: 200px;
    background-color: var(--foo-color);
}

span{
    font-size: 16px;
    color:  var(--nav-color);
    padding: 0 10px 0 10px;
}

/* Efectos y animaciones */

.header h1{
    animation: parpadeo 8s ease-in-out infinite;
}

@keyframes parpadeo {
    0%{
        color: var(--nav-color);
    }

    50%{
        color: var(--txt-color);
    }

    100%{
        color: var(--nav-color);  
    }
}