html,
body {
  background: #fff;
  font-size: 1vw;
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
}
body {
  display: flex;
  justify-content: center;
  align-items: center;
}
.keyboard {
  display: inline-block;
  position: relative;
  transition: filter 0.7s;
}
p,
div {
  margin: 0;
  padding: 0;
}
.key {
  margin: 0.2rem;
  padding: 0;
  display: inline-block;
  font-family: Ubuntu, sans-serif;
  width: 6rem;
  height: 6rem;
  font-size: 2rem;
  position: relative;
  transition: background-color ease-out 0.1s;
  box-sizing: border-box;
  background-color: #f5f5f5;
}
.key:hover {
  background-color: rgba(188,166,142,0.4);
}
.key:active {
  background-color: #bca68e;
}
.key p {
  display: block;
  position: absolute;
  width: 50%;
  height: 50%;
  text-align: center;
}
.key .lower {
  right: 0;
  bottom: 0;
}
.key .upper {
  left: 0;
  top: 0;
}
.key.letter {
  line-height: 6rem;
}
.key.letter p {
  width: 100%;
  height: auto;
}
.key.letter .lower {
  display: none;
}
.key[id] {
  line-height: 6rem;
}
.key[id] p {
  width: 100%;
  height: auto;
}
.line {
  margin: 0;
  padding: 0.2rem;
  height: 6rem;
  display: block;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}
.line:nth-of-type(2)>.key:first-of-type {
  width: 10rem;
}
.line:nth-of-type(3)>.key:first-of-type {
  width: 12rem;
}
.line:nth-of-type(4)>.key:first-of-type {
  width: 14rem;
}
.line:nth-of-type(3)>.key:nth-of-type(5):after,
.line:nth-of-type(3)>.key:nth-of-type(8):after {
  content: "";
  display: block;
  position: absolute;
  bottom: 0px;
  left: 20%;
  width: 60%;
  border-bottom: 0.3rem solid #bca68e;
}
.line:nth-of-type(2)>.key:last-of-type {
  z-index: 2;
  position: absolute;
}
#enter {
  width: 12.8rem;
  height: 12.4rem;
  margin-top: -6.2rem;
  position: absolute;
  z-index: 1;
}
#enter p {
  bottom: 0;
}
#enter:before {
  width: 4rem;
  height: 6rem;
  padding: 0.2rem;
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  background-color: #fff;
}
#rshift {
  width: 17.2rem;
}
#selector {
  text-align: center;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  display: none;
  justify-content: center;
  align-items: center;
}
#selector>div {
  display: inline-block;
  border: 3rem solid transparent;
}
#selector * {
  margin: 0;
  padding: 0;
  font-size: 1.25rem;
}
#selector input,
#selector select {
  box-sizing: border-box;
  padding: 1rem;
  margin: 0.2rem 0;
  width: 100%;
  border: 0;
  background-color: transparent;
  border-bottom: 0.1rem solid rgba(188,166,142,0.3);
  transition: border-bottom-color 0.7s;
}
#selector input:hover,
#selector select:hover {
  border-bottom-color: #bca68e;
}
#selector h1 {
  font-weight: bold;
  font-size: 2.5rem;
}
#selector button {
  width: 100%;
  height: 4rem;
  margin-top: 2rem;
  border: 0.1rem solid #bca68e;
  background-color: transparent;
  transition: background-color 0.5s, box-shadow 0.3s;
}
#selector button:hover {
  background-color: #bca68e;
  box-shadow: 0.2rem 0.2rem 0.1rem #bca68e;
}
#selector button:active {
  box-shadow: 0 0 0 transparent;
}
.hidden {
  display: none;
}