html, body {
  margin: 0;
  padding: 0;
}

.container {
  width: 100vw;
  height: 100vh;
  background-image: url('./carte_voeux_2019.png');
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}



@media (min-width:320px) {
    /* smartphones, iPhone, portrait 480x320 phones */
    iframe {
      margin-top: -60px;
      width: 250px;
      height: 125px;
    }
}

@media (min-width:481px) {
  /* portrait e-readers (Nook/Kindle), smaller tablets @ 600 or @ 640 wide. */
    iframe {
    margin-top: -60px;
    width: 250px;
    height: 125px;
    }
}

@media (orientation: landscape) and (min-width : 500px) {
    iframe {
    margin-top: -60px;
    width: 100vw;
    height: 100vh;
    }
}

@media (min-width:641px) {
  /* portrait tablets, portrait iPad, landscape e-readers, landscape 800x480 or 854x480 phones */
    iframe {
    margin-top: -60px;
    width: 400px;
    height: 200px;
    }
}

@media (orientation: landscape) and (max-width : 641px) {
    iframe {
        margin-top: -60px;
        width: 100vw;
        height: 100vh;
    }
}


@media (min-width:961px) {
  /* tablet, landscape iPad, lo-res laptops ands desktops */
    iframe {
    margin-top: -60px;
    width: 100vw;
    height: 100vh;
    }
}

@media (min-width:1025px) {
  /* big landscape tablets, laptops, and desktops */
}

@media (min-width:1281px) {
    /* portrait e-readers (Nook/Kindle), smaller tablets @ 600 or @ 640 wide. */
    iframe {
    margin-top: -60px;
    width: 350px;
    height: 175px;
    }
}