html {
    box-sizing: border-box;
    height: 100%;
  }
  
  *, *::before, *::after {
    box-sizing: inherit;
  }
  
  body {
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
  }
  
  body {
    background: #2f2f2f;
  }
  
  .corner-button {
    font-family: 'Lato', sans-serif;
    letter-spacing: .02rem;
    cursor: pointer;
    background: transparent;
    border: 0.5rem solid currentColor;
    padding: 1.5rem 2rem;
    font-size: 2.2rem;
    color: #06c17f;
    position: relative;
    transition: color 0.3s;
  }
  .corner-button:hover {
    color: pink;
  }
  .corner-button:hover::before {
    width: 0;
  }
  .corner-button:hover::after {
    height: 0;
  }
  .corner-button:active {
    border-width: 0.25rem;
  }
  .corner-button span {
    position: relative;
    z-index: 2;
  }
  .corner-button::before, .corner-button::after {
    content: '';
    position: absolute;
    background: #2f2f2f;
    z-index: 1;
    transition: all 0.3s;
  }
  .corner-button::before {
    width: calc(100% - 3rem);
    height: calc(101% + 1rem);
    top: -0.5rem;
    left: 50%;
    -webkit-transform: translateX(-50%);
            transform: translateX(-50%);
  }
  .corner-button::after {
    height: calc(100% - 3rem);
    width: calc(101% + 1rem);
    left: -0.5rem;
    top: 50%;
    -webkit-transform: translateY(-50%);
            transform: translateY(-50%);
  }
  .instructions {
    position: fixed;
    top: auto;
    bottom: 10px;
    left: 0;
    width: 100%;
    text-transform: uppercase;
    font-size: 12px;
    text-align: center;
    color: #465666;
  }
  
  #mainCanvas {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
  }
  
  .keyboard {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: calc(130px + 59vw);
  }
  .keyboard .row {
    position: relative;
    float: left;
    width: 100%;
    clear: both;
  }
  .keyboard .row.row-1 {
    margin-left: 7vw;
  }
  .keyboard .row.row-2 {
    margin-left: 8vw;
  }
  .keyboard .row.row-3 {
    margin-left: 10vw;
  }
  .keyboard .row .key {
    position: relative;
    float: left;
    height: 4vw;
    width: 4vw;
    border: 2px solid #465666;
    color: #465666;
    border-radius: 5px;
    margin: 3px;
    font-size: 1.2vw;
    text-transform: uppercase;
    line-height: 4vw;
    text-align: center;
  }
  @media only screen and (max-width: 1023px) {
    .keyboard .row .key {
      height: 8vw;
      line-height: 8vw;
      font-size: 1.5vw;
    }
  }
  .keyboard .row .key span {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    overflow: visible;
    transition: all 0.1s;
    transform-origin: center;
    backface-visibility: hidden;
  }
  .keyboard .row .key .alt {
    position: absolute;
    font-size: 0.7vw;
    top: 5px;
    right: 5px;
    height: 10px;
    width: 10px;
    line-height: 10px;
  }
  .keyboard .row .key.key--down {
    border-color: #eeeeee;
  }
  .keyboard .row .key.key--down > span {
    color: #eeeeee;
    transition: all 0.05s;
    transform: scale(1.7);
  }
  .keyboard .row .key.key--down-shifted {
    border-color: #eeeeee;
  }
  .keyboard .row .key.key--down-shifted .alt span {
    color: #eeeeee;
    transition: all 0.05s;
    transform: scale(1.25);
  }