/*
1. Posicionamiento.
2. Modelo caja (Box model).
3. Tipografía.
4. Visuales.
5. Otros.
*/

*{
    text-align: center;
    font-family: Roboto;
}

body{
    margin: 0px;
}

header{
    margin: auto;
    margin-bottom: 4%;
}

#sec0{
    padding: 4%;
}

#sec1 p{
     margin: 2%;
}


h1{
    margin: 1%;
}

h2{
    font-size: 20px;
    opacity: 60%;
    margin-top: 0%;
}

#sec2 , #sec4, #sec0{
    background-color: #000000;
    color: white;
    padding: 5%;
}

h3, h5{
    margin-top: 1%;
    font-weight: 400;
    font-size: 25px;
}

h3, h4, h5{
    font-size: 25px;
}

#imgbox1{
    display: none;
}

#flecha{
    width: 50%;
}

#videos{
    padding:56.25% 0 0 0;
}

#sec4 p{
    line-height: 2;
}

#followus{
    margin-bottom: 0.5%;
}

a{
    color: white;
    font-size: 140%;
}



/* Extra small devices (phones, 600px and down) */
@media only screen and (max-width: 600px) {
    #logo {
        background: #000000;
        width: 50%;
        height: auto;
    }

    a{
        font-size: 90%;
    }
}

/* Small devices (portrait tablets and large phones, 600px and up) */
@media only screen and (min-width: 600px) {
    #logo {
        background: #000000;
        width: 30%;
        height: auto;
    }

    h1, h3, h4, h5{
        font-size: 35px;
    }

    h2{
        font-size: 25px;
    }

    section p{
        font-size: 20px;
    }

}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (min-width: 768px) {

}

/* Large devices (laptops/desktops, 992px and up) */
@media only screen and (min-width: 992px) {
    
    header{
        margin-bottom: 2%;
    }

    #sec0{
        padding: 1%;
    }

    #logo{
        width: 15%;
    }

    h1, h3, h4, h5{
        font-size: 50px;
    }

    #sec1 p{
        font-size: 30px;
    }

    h2{
        font-size: 220%;
    }
   
    #bloque_video{
        display: inline-block;
        padding: 10px;
    }

    #videos{
        padding:200px 0 0 0;
        display: inline-block;
        width: 400px;
    }
    
    #imgbox1{
        display: inline-block;
    }

    button{
        font-size: 20px;
    }

    h4{
        margin-bottom: 3%;
    }

    #sec3 div{
        display: inline-table;
        margin: 0% 4% 2% 4%;
        width: 300px;
    }

}

/* Extra large devices (large laptops and desktops, 1200px and up) */
@media only screen and (min-width: 1200px) {
    
    #sec2 p{
        font-size: 25px;
    }

    #videos{
        padding: 56.25% 0 0 0;
        width: 600px;
    }

    #mostrarmas{
        display: none;
    }

}