body {
  font-family: 'Source Sans Pro', sans-serif;
  margin: auto;
}

div.text-and-image {
  max-width: 540px;
}

div.text-only {
  text-align: justify;
}

div + div {
  margin-top: 10px;
}

.inner-center {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.outer-center {
  margin: auto;
}

img.github {
  max-width: 300px;
}

/* 
  ##Device = Desktops
  ##Screen = 1281px to higher resolution desktops
*/

@media (min-width: 1281px) {
  
  .video {
    width: 640px;
  }
  .v16x9 {
    height: 360px;
  }
  .v4x3 {
    height: 480px;
  }

  img.github {
    width: 250px;
  }
  
}

/* 
  ##Device = Laptops, Desktops
  ##Screen = B/w 1025px to 1280px
*/

@media (min-width: 1025px) and (max-width: 1280px) {
  
  .video {
    width: 480px;
  }
  .v16x9 {
    height: 270px;
  }
  .v4x3 {
    height: 360px;
  }
  
}

/* 
  ##Device = Tablets, Ipads (portrait)
  ##Screen = B/w 768px to 1024px
*/

@media (min-width: 768px) and (max-width: 1024px) {
  
  .video {
    width: 480px;
  }
  .v16x9 {
    height: 270px;
  }
  .v4x3 {
    height: 360px;
  }
  
}

/* 
  ##Device = Tablets, Ipads (landscape)
  ##Screen = B/w 768px to 1024px
*/

@media (min-width: 768px) and (max-width: 1024px) and (orientation: landscape) {
  
  .video {
    width: 360px;
  }
  .v16x9 {
    height: 203px;
  }
  .v4x3 {
    height: 270px;
  }
  
}

/* 
  ##Device = Low Resolution Tablets, Mobiles (Landscape)
  ##Screen = B/w 481px to 767px
*/

@media (min-width: 481px) and (max-width: 767px) {

  .text-only {
    width: 90vw;
  }

  .video {
    width: 360px;
  }
  .v16x9 {
    height: 203px;
  }
  .v4x3 {
    height: 270px;
  }
  
}

/* 
  ##Device = Most of the Smartphones Mobiles (Portrait)
  ##Screen = B/w 320px to 479px
*/

@media (min-width: 320px) and (max-width: 480px) {

  .text-only {
    width: 90vw;
  }

  .video {
    width: 100vw;
  }
  .v16x9 {
    height: 203px;
  }
  .v4x3 {
    height: 270px;
  }
  
}