*
{

margin: 0px;  /* sin margenes en el documento. Ningún elemento tendrá márgenes.*/
padding: 0px;    
    
box-sizing: border-box;
-webkit-box-sizing:border-box;
-moz-box-sizing: border-box;
-ms-box-sizing: border-box;

}

/* FAMILIA PARA todo EL TEXTO */
h1, h2, h3, h4, h5, h6, p, a {

    font-family: 'Oswald', sans-serif;
    font-family: 'Open Sans', sans-serif;
    font-family: 'Roboto', sans-serif;
    font-family: 'Roboto Condensed', sans-serif;
  
}


/* <uniquifier>: Use a unique and descriptive class name  */
/* <weight>: Use a value from 100 to 800 */

.jetbrains-mono {
  font-family: "JetBrains Mono", monospace;
  font-optical-sizing: auto;
  font-weight: 300;
  font-style: normal;
}




/* HEADER */


header {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
  }


/* Menu */

.navigation {
  display: flex;
  flex-direction: row;
  justify-content: start;
  align-items: center;
  list-style: none; 
  padding: 0 0 0 30px ; 
}

.navigation li a {
  color: #000;
  font-size: 20px;
  font-weight: 100;
  padding-right: 15px;
  text-decoration: none;
}

.navigation li .fa-home {
    font-size: 24px;
    font-weight: 24px;
}

.navigation li .useless {
    pointer-events: none;
    color: #606060;
}


.navigation li .uselesspeak {
    pointer-events: none;
    color: #606060;
    font-weight: 100;
    font-size: 20px;
  }

.navigation li a.speak {
    color: #D3220B;
    font-weight: 200;
  }


/* Logo */

.logo img {
    width: 30px;
  }
  
  .logo h5 {
    font-size: 18px;
    font-weight: 100;
    color: #000;
    line-height: 30px;
    padding-left: 4px;
  }
  
  .logo {
    display: flex;
    flex-direction: row;
    justify-content: end;
    align-items: start;
    padding: 20px;
  }




/* Poster */

.about {
    width: 100%;
    max-width: 1200px;
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 20px;
    padding-bottom: 10px;
  }

.poster-aboutus img {
    width: 100%;
    max-width: 800px;
    padding: 0 20px;
  }
  
.poster-aboutus p {
    text-align: center;
    font-family: "JetBrains Mono", monospace;
    font-weight: 100;
    font-size: 10px;
}  

.poster-aboutus p a {
    font-family: "JetBrains Mono", monospace;
    font-weight: 100;
    font-size: 10px;
    color: #000;
    text-decoration: none;
}



/* Párrafos */

.about .english, .polish {
    text-align: justify;
    padding: 30px 0 30px 0;
    width: 100%;
    max-width: 800px; 
}

.laperla-poster img {
    width: 100%;
    max-width: 800px;
    padding: 20px 0; 
}
 

.office-poster img {
    width: 100%;
    max-width: 800px;
    padding: 20px 0;  
}

.us .names  {
    color: black;
    font-size: 20px;
    line-height: 20px;
    font-family: "JetBrains Mono", monospace;
    font-weight: 100;
    padding: 10px 0 20px 0;
}

h2 {
    text-align: left;
    padding-bottom: 10px;
    font-weight: 300;
    font-size: 22px;
    font-family: "JetBrains Mono", monospace;
}

h3 {
    padding-bottom: 25px;
    font-weight: 300;
    font-size: 18px;
    font-family: "JetBrains Mono", monospace;
}

p {
    padding-bottom: 15px;
    font-family: "JetBrains Mono", monospace;
}


/* Video */

.yt {
    text-align: center;
    position: relative;
    width: 100%;
    overflow: hidden;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
}

.responsive-iframe {
    
    position: absolute;
    text-align: center;
    top:50%;
    left:50%;
    bottom: 0;
    right: 0; 
    transform: translateX(-50%) translateY(-50%);
    width: 65%;
    height: 65%;
    border: none;
}

/* --- */


/* BACK TO HOME BUTTON */

.backtohome {
    text-align: center;
    padding: 30px;
}

.goback {
    text-align: center;
    display: inline-block;
    width: 200px;
    color:#000000;
    text-decoration: none;
    padding:6px;
    margin-top: 20px;
    font-size: 20px;
    border: 1px solid #000000;
    border-radius: 10px;
    transition: all .5s;
}

.goback:hover {
    cursor:pointer;
    color: #D3220B;
    border: 1px solid #D3220B;
    transition: all .5s ease-in;
}





@media (max-width: 1200px) {

    /* Párrafos */

    .about .english, .polish {
        padding: 15px 0 15px 0;
        width: 100%;
        max-width: 700px;  
    }

    .laperla-poster img {
        width: 100%;
        max-width: 700px;
        
    }

    .office-poster img {
        width: 100%;
        max-width: 700px; 
    }

    .laperla-poster {
        padding: 0 0 25px 0; 
    }

    .office-poster {
        padding: 0 0 25px 0;  
    }

    .us .names {
        font-size: 16px;
        line-height: 16px; 
        padding: 10px 0 20px 0;
    } 

    h2 {
        font-weight: 300;
        font-size: 18px; 
    }

    h3 {
        font-weight: 300;
        font-size: 16px; 
    }

    p {
        font-size: 14px;
    }

    /* Video */

    .yt {
        text-align: center;
        position: relative;
        width: 100%;
        overflow: hidden;
        padding-top: 56.25%; /* 16:9 Aspect Ratio */
    }

    .responsive-iframe {
    
        position: absolute;
        text-align: center;
        top:50%;
        left:50%;
        bottom: 0;
        right: 0; 
        transform: translateX(-50%) translateY(-50%);
        width: 70%;
        height: 70%;
        border: none;
    }


}


/* RESPONSIVE ZONE */

@media (max-width: 900px) {
    .logo h5 {
      display: none;
    }
  }


@media (max-width: 600px) {

    /* Párrafos */

    .about .english, .polish {
        padding: 15px 0 15px 0;
        width: 100%;
        max-width: 300px;  
    }

    .laperla-poster img {
        width: 100%;
        max-width: 300px;
    }

    .office-poster img {
        width: 100%;
        max-width: 300px; 
    }

    .laperla-poster {
        padding: 0 0 10px 0; 
    }

    .office-poster {
        padding: 0 0 10px 0;  
    }

    .us .names {
        font-size: 14px;
        line-height: 14px; 
        padding: 10px 0 20px 0;
    } 

    h2 {
        font-weight: 300;
        font-size: 16px; 
    }

    h3 {
        font-weight: 300;
        font-size: 14px; 
    }

    p {
        font-size: 12px;
    }

     /* Video */

     .yt {
        text-align: center;
        position: relative;
        width: 100%;
        overflow: hidden;
        padding-top: 56.25%; /* 16:9 Aspect Ratio */
    }

    .responsive-iframe {
    
        position: absolute;
        text-align: center;
        top:50%;
        left:50%;
        bottom: 0;
        right: 0; 
        transform: translateX(-50%) translateY(-50%);
        width: 75%;
        height: 75%;
        border: none;
    }


}