@import url('https://fonts.googleapis.com/css2?family=Cabin:wght@400;700&display=swap');

html {
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  word-wrap: normal;
  word-break: break-word;
  font-variant-ligatures: common-ligatures;
  -webkit-font-feature-settings: "liga", "clig";
  -moz-font-feature-settings: "liga", "clig";
  font-feature-settings: "liga", "clig";
  -webkit-font-feature-settings: "liga", "lnum";
  -moz-font-feature-settings: "liga", "lnum";
  font-feature-settings: "liga", "lnum";
  position: relative;
  -webkit-tap-highlight-color: rgba(0,0,0,0);
  min-height: 100%;
  min-height: calc(100% + env(safe-area-inset-top));
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
  box-sizing: border-box;
    -ms-user-select: None;
    -moz-user-select: None;
    -webkit-user-select: None;
    user-select: None;
    overflow: hidden;
}
body {
  margin: 0;
  padding: 0;
  font-family: Cabin, Arial, Helvetica, sans-serif;
  font-weight: normal;
  font-size: 18px;
  text-align: center;
  overflow: hidden;
}
.container {
    max-width: 400px;
    margin: 0 auto;
    padding: 40px 5% 40px;
}
h1 {
    text-align: center;
    margin-bottom: 30px;
}
.timer {
    margin-bottom: 30px;
    height: 20px;
}
.zeile {
    position: relative;
    max-width: 200px;
    margin: 0 auto 60px;
}
.notenschluessel {
    position: absolute;
    width: 27px;
    height: auto;
    bottom: -16px;
    left: 8px;
}
.linie {
    border-bottom: 1px solid #000;
    height: 9px;
}
.note {
    width: 14px;
    height: 9px;
    background: #000;
    border-radius: 50%;
    transform: translate(0, 14px);
    position: absolute;
    left: 46%;
    bottom: 0;
    display: none;
}
.helpline {
    width: 26px;
    height: 1px;
    display: block;
    position: absolute;
    background-color: #000;
    top: 4px;
    left: -6px;
}
.feedback {
    text-align: center;
    /*display: none;*/
}
.btn-start {
    border: 0;
    border-radius: 10px;
    font-family: Cabin, Arial, Helvetica, sans-serif;
    font-size: 1em;
    font-weight: bold;
    padding: 20px 30px;
    min-width: 130px;
    background-color: #1877F2;
    color: #fff;
    -webkit-appearance:  none;
    -moz-appearance:  none;
    appearance:  none;
    cursor: pointer;
}

.keyboard {
    display: none;
    position: fixed;
    width: 100%;
    bottom: 0;
    height: 30%;
}
.key {
    display: flex;
    border-right: 1px solid #9d9d9d;
    border-top: 1px solid #9d9d9d;
    height: 100px;
    flex: 1 0 auto;
    cursor: pointer;
    height: 100%;
}
.key:last-child {
    border-right: none;
}
.key:active {
    background: #fafafa;
    box-shadow: 0 16px 22px -10px inset rgba(0,0,0,0.2);
}
.key:active span {
    padding-top: 45px;
}
.key.false, .key.false:active {
    background: red;
}
.key span {
    text-align: center;
    width: 100%;
    padding-top: 40px;
    text-transform: uppercase;
}