@import url ( 'https://fonts.googleapis.com/css?family= Roboto: 300400500700 '); 


* {
    box-sizing: border-box;
    margin:0;
    padding: 0;
    max-width: 100%;
    
}

body {
    font-family: 'Roboto', 'Arial', sans-serif;}


/*header*/

header{
    background-image: url(img/0101.gif);
    background-size: cover;
    padding: 1rem;
    background-position: center;
}

header img{
    margin: auto;
    display: flex;
}

header h1 {
    text-align: center;
    font-weight: 700;
    color:#fff;
}

main {
    margin: auto;
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    max-width: 90%;
}

.titulo {
    color: #fff;
    font-weight: 700;
    font-size: 1.5rem;
    text-align: center;
    padding: 1.2rem 0;
    margin: 3rem auto 1rem;
    width: 90%;
    background-color: #2C3456
}

.columna {
    padding: 1rem 0;
    display: flex;
    flex-direction: column;
    width: 31%;
        background-color: #e5e5e5;
    padding: 1rem;
    
}

.columna h2 {
    font-weight: 700;
    font-size: 1.5rem;
    text-align: center;
    padding: 0.3rem;
    color: #2C3456;
    

}

.columna p {
    text-align:center;
    color: #2C3456;
    font-size: 0.9rem;
}




/* flecha */
.volver{
    font-size: 0.8rem;
    padding: 1rem 0 0 0;
}

.volver a p {
    margin-bottom: 1rem;
    text-align: center;
    color: #2C3456;
    font-weight: 700;
}

.volver a p:hover {
    color:#4D9E87;
}
.volver img {
    display: flex;
    margin: auto;
}

.volver a {
    text-decoration: none;
}

footer{
    background-color: #dbdbdb;
    text-align: center;
    padding: 1rem;
    font-size: .8rem;
    color: #FFFFFF;
    position: relative;
}

footer h4{
    color:#6ACBB3;
}

nav {
    margin: 2rem auto 0;
    display: flex;
}

nav ul {
    display: inline-flex;
    padding: 1rem;
    margin: auto;
    
}

li {
    list-style-type: none;
}

.boton1 {
    text-decoration: none;
    padding: 1.4rem 1.5rem;
    background: #6ACBB3;
    margin: 1rem;
    font-weight: 700;
    color: #2C3456;

}

.boton1:hover {
    background: #4D9E87;

    color: #2C3456;

}




/* ------------------------------- Para tablet ------------------------------- */

@media screen and (min-width: 640px){}

/* ------------------------------- Para Mobile ------------------------------- */

@media screen and (max-width: 320px){
    main {
        margin:auto 1.5rem;
        display: block;
    }
    .columna{
        width: 100%;
        margin: 1rem 0;
    }
    
    .boton1{
        padding: 0.7rem;
    }
    
}