* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  font-weight: normal;
}

template {
  display:none;
}

body {
  width: 100vw;
  height: 100vh;
  padding: 25px;
}

#main_container {
  display: flex;
  justify-content: space-around;
  align-items: stretch;
  width: 100%;
  background-color: #ddd;
  position: relative;
  top: 50vh;
  margin-top: -25vh;
}

#settings {
  flex: 1 0 auto;
  margin-right: 25px;
  background-color: #999;
}

#stats {
  flex: 1 0 auto;
  margin-left: 25px;
  background-color: #999;
}

#timer {
  font-size: 3rem;
  font-weight: bold;
  font-family: monospace;
  text-align: center;
}

#challange_box {
  flex: 0 0 50%;

  background-color: #eee;
  text-align: center;
}

#current_kana {
  font-size: calc(5rem + 5vw);
}

#answer_field_wrapper {
  margin-top: 10px;
  display: flex;
  justify-content: space-around;
}

#answer_field {
  flex: 0 0 33%;
  font-size: 1em;
  padding: 0.25em;
  height: 2em;
  font-size: 2vw;
  border: 1px solid black;
  border-radius: 5px;
}

.setting {
  font-size: 1.25em;
  display: block;
}

.setting label {
  text-transform: capitalize;
  margin-left: 5px;
}