html,
body {
  font-family: Arial, sans-serif;
  /*display: flex;*/
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background-color: #f5f5f5;
}

#container {
  width: 100%;
  height: 100%;
  text-align: center;
}

#questionUp {
  font-size: 20px;
}

#questionDown {
  font-size: 32px;
  margin-bottom: 20px;
}

#typedWord {
  font-size: 28px;
  height: 28px;
}

.keyboard-row {
  margin-top: 10px;
}

.keyboard-key {
  display: inline-block;
  width: 50px;
  height: 50px;
  margin: 2px;
  border: 1px solid #ccc;
  font-size: 20px;
  line-height: 50px;
  text-align: center;
  background-color: #fff;
}

.invisible {
  visibility: hidden;
}

#image {
  height: 20%;
}

.space {
  width: 200px;
}

/* 指のコンテナ */
.hand-container {
  width: 100%;
  height: 15%;
  border-radius: 10px;
  overflow: hidden;
  text-align: center;
}

.hand {
  display: inline-block;
  width: 20%;
  height: 100%;
  text-align: center;
  vertical-align: top;
}

.finger-container {
  display: inline-block;
  width: 15%;
  height: 100%;
}

.finger {
  display: inline-block;
  width: 100%;
  height: 100%;
  background-color: #ffdab9;
  opacity: 0.3;
  border-top-left-radius: 30px;
  border-top-right-radius: 30px;
  margin: 0px 1px;
}

.little-finger {
  height: 50%;
  margin-top: 50%;
}

.ring-finger {
  height: 90%;
  margin-top: 10%;
}

.middle-finger {
  height: 100%;
}

.index-finger {
  height: 90%;
  margin-top: 10%;
}

.thumb {
  height: 30%;
  margin-top: 70%;
}

@media (max-width: 800px) {
  .keyboard-key {
    display: inline-block;
    width: 7.5%;
    height: 8%;
    margin: 0.2%;
    border: 1px solid #ccc;
    font-size: 20px;
    line-height: 35px;
    text-align: center;
    background-color: #fff;
  }

  .space {
    width: 32%;
  }

  .hand {
    display: inline-block;
    width: 40%;
    height: 100%;
    text-align: center;
    vertical-align: top;
  }
}