html, body {
  margin: 0;
  width: 100%;
  height: 100%;
  padding: 0;
}

#content {
  padding: 10px;
  width: calc(100% - 20px);
  height: calc(100% - 20px);
}

button, input, select{
  border-radius: 10px;
  padding: 5px;

  margin-top: 2px;
  margin-bottom: 2px;

  border-color: #000000;
  border-style: solid;

  border-width: 2px;

}

select {
  box-shadow: #00000055 2px 2px 10px;
}

input {
  box-shadow: inset #00000055 4px 4px 4px;
}

button {
  box-shadow: inset #00000055 -2px -2px 10px, #000000aa 2px 2px 10px;
}

video {
  border-radius: 20px;
  box-shadow: #000000aa 2px 2px 10px;
}

canvas {
  margin: 10px;
  box-shadow: #000000aa 2px 2px 10px;
  border-radius: 20px;
}

#export {
  width: 70px;
}

#video_div, #dialog_div {
  width: calc(50% - 10px);
  margin-left: 5px;
  margin-right: 5px;
}

#dialog_div {
  overflow-y: scroll;
}

@media (max-width: 660px) {
  #content {
    flex-direction: column;
  }
  #video_div, #dialog_div {
    width: calc(100% - 10px);
  }
  #export {
    width: calc(100%);
  }
}