.keyboard_container {
  position: relative;
  display: none;
}

.keyboard_container.open {
  display: inline-block;
}

.keyboard {
  display: block;
  margin: 0.1em;
  padding: 0.5em 2em 0.5em 0.5em;
  position: absolute;
  text-align: center;
  z-index: 1;
  background-color: rgb(255, 255, 255);
  box-shadow: 3px 3px 2px rgba(100, 100, 100, 25%);
  max-width: 25em;
  min-width: 15em;
  border: 1px solid rgb(200, 200, 200);
  border-radius: 5px;
}

.keyboard button {
  margin: 0.25em;
  height: 2em;
  width: 2em;
  text-align: center;
}

.keyboard button.close_keyboard {
  position: absolute;
  font-size: 8px;
  margin: auto;
  line-height: 0;
  padding: initial;
  right: 1em;
}