html {
        box-sizing: border-box;
        font-size: 62.5%;
    }
    
    *,
    *:before,
    *:after {
        box-sizing: inherit;
    }
    
    body {
        font-family: 'Open Sans', sans-serif;
        font-size: 1.6rem;
        line-height: 2;
    }
    /**Globales**/
    
    .contenedor {
        max-width: 1200px;
        width: 95%;
        margin: 0 auto;
    }
    
    h1,
    h2,
    h3,
    h4 {
        font-family: 'PT Sans', sans-serif;
    }
    
    h1 {
        font-size: 4.8rem;
    }
    
    h2 {
        font-size: 4rem;
        line-height: 1.2;
    }
    
    h3 {
        font-size: 3.2rem;
    }
    
    h4 {
        font-size: 2.8rem;
    }
    
    img {
        max-width: 100%;
    }
    /**Utilidades**/
    
    .centrar-texto {
        text-align: center;
    }
    
    .no-margin {
        margin: 0;
    }
    /**Grid**/
    
    @media (min-width: 768px) {
        .grid {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .centrar-columnas {
            justify-content: center;
        }
        .columnas-4 {
            flex: 0 0 calc(33.3% - 1rem);
        }
        .columnas-6 {
            flex: 0 0 calc(50% - 1rem);
        }
        .columnas-8 {
            flex: 0 0 calc(66.6% - 1rem)
        }
        .columnas-10 {
            flex: 0 0 calc(83.3% - 1rem);
        }
        .columnas-12 {
            flex: 0 0 100%;
        }
    }
    /**Botones**/
    
    .btn {
        display: block;
        text-align: center;
        padding: 1rem 3rem;
        margin: 2rem 0;
        color: #ffffff;
        text-decoration: none;
        font-family: 'PT Sans', sans-serif;
        font-weight: 700;
        text-transform: uppercase;
        font-size: 2rem;
        flex: 0 0 100%;
        border: none;
    }
    
    .btn:hover {
        cursor: pointer;
    }
    
    .btn-primario {
        background-color: #000000;
    }
    
    .btn-secundario {
        background-color: #A18262;
    }
    
    @media (min-width: 768px) {
        .btn {
            display: inline-block;
            flex: 0 0 auto;
        }
    }
    /**Header**/
    
    @media (min-width:768px) {
        .barra {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
    }
    
    .site-header {
        background-image: url(../img/banner.jpg);
        background-repeat: no-repeat;
        background-position: center center;
        background-size: cover;
        height: 60rem;
    }
    
    .site-header a {
        color: #ffffff;
        text-decoration: none;
    }
    
    .site-header h1 {
        text-align: center;
        font-weight: 700;
    }
    /**Navegacion**/
    
    .navegacion a {
        text-align: center;
        display: block;
        font-size: 1.8rem;
        color: #ffffff;
        text-decoration: none;
    }
    
    .navegacion a:hover {
        color: #784d3c;
    }
    
    @media (min-width: 768px) {
        .navegacion a {
            display: inline;
            margin-right: 2rem;
        }
        .navegacion a:last-of-type {
            margin: 0;
        }
    }
    /** Header texto **/
    
    .texto-header {
        color: #ffffff;
        text-align: center;
        margin-top: 5rem;
    }
    
    @media (min-width: 768px) {
        .texto-header {
            margin-top: 15rem;
        }
    }
    
    .texto-header p {
        font-size: 2.2rem;
    }
    /**Contenido Principla HOME**/
    
    .contenido-principal {
        display: flex;
        flex-wrap: wrap;
    }
    
    .blog,
    .cursos {
        flex: 0 0 100%;
    }
    
    .cursos {
        order: -1;
    }
    
    @media (min-width: 768px) {
        .contenido-principal {
            justify-content: space-between;
        }
        .blog {
            flex-basis: 66.6%;
        }
        .cursos {
            flex-basis: calc(33.3% - 4rem);
            order: 2;
        }
    }
    /**Cursos-lista**/
    
    .cursos-lista {
        padding: 0;
        list-style: none;
    }
    
    .curso {
        padding-top: 3rem;
        padding-bottom: 3rem;
        border-bottom: 1px solid #e1e1e1;
    }
    
    .curso:last-of-type {
        border-bottom: none;
    }
    
    .curso p {
        font-family: 'PT Sans', sans-serif;
        font-weight: 700;
        font-size: 2rem;
    }
    
    .curso p span,
    .curso p.descripcion {
        font-weight: 400;
    }
    /**Footer**/
    
    .site-footer {
        background-color: #000000;
        padding: 3rem;
        margin-top: 4rem;
    }
    
    .site-footer p {
        color: #ffffff;
        font-size: 4rem;
        font-weight: 400;
        font-family: 'PT Sans', sans-serif;
        text-align: center;
    }
    
    .site-footer p span {
        font-weight: 700;
    }
    /**Contacto**/
    
    .formulario-contacto {
        background-color: #ffffff;
        padding: 5rem;
    }
    
    @media (min-width: 768px) {
        .formulario-contacto {
            margin-top: -10rem;
        }
    }
    
    .formulario-contacto .campo {
        display: flex;
        justify-content: space-between;
        margin-bottom: 2rem;
    }
    
    .formulario-contacto .campo label {
        flex: 0 0 8rem;
    }
    
    .formulario-contacto .campo input:not([type="submit"]),
    .formulario-contacto textarea {
        flex: 1;
        border: 1px solid #e1e1e1;
        padding: 1rem;
    }
    
    .formulario-contacto textarea {
        height: 20rem;
    }
    
    .formulario-contacto .enviar {
        display: flex;
        justify-content: flex-end;
    }