html, body {
  margin: 0;
  padding: 0;

  font-family: sans-serif;
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-items: stretch;
}

header {
  width: 100%;
  text-align: center;

  border-bottom: solid 3px #EEE;
}

.auswahl {
  display: flex;
  flex-wrap: wrap;
  gap: 1em;
  align-items: center;
  justify-content: center;
}

.menu-knopf {
  height: 150px;
  width: 300px;
  max-width: 100%;
  line-height: 1.2;
  font-size: 2em;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  border-radius: 5px;
}

.menu-knopf .annotation {
  font-size: .6em;
  margin-top: .5em;
  display: inline-block;
}

.screen {
  flex: 1;
  margin: 5% 10%;
}

.screen h2 {
  font-weight: 1.2em;
  text-align: center;
}

.box {
  border: solid 1px black;
}

.results {
  display: grid;
  grid-template-columns: 50fr 50fr;
}

.buchstabe {
  align-self: center;
  justify-self: center;
}

.buchstabe .box {
  font-size: 10em;
}

.buchstabe-caption {
  text-align: center;
  font-size: .9em;
}

.right,
.wrong {
  align-self: center;
  justify-self: center;

  font-size: 3em;
}

.right {
  color: #77B255;
}

.wrong {
  color: #da3535;
}

.screen {
  display:  none;
}

.screen.shown {
  display: block;
}

.status-img {
  height: 30px;
  margin-right: .5em;
}

.ergebnis-box {
  border: double 20px #E0E0E0;
  padding: 30px;
  position: relative;
}

.final-points {
  font-size: 4em;
  font-weight: bold;
  margin: .3em 0;
}

.btn {
  background: #EEE;
  border: solid 4px #CCC;
  border-radius: 5px;
  display: flex;
  align-items: center;
  padding: 10px 20px;
}

.btn-primary {
  font-weight: bold;
}

.btn-icon {
  margin-right: 1em;
  height: 28px;
}

.btn:hover {
  background: #E3E3E3;
  border-color: #B0B0B0;
}

.btn:active {
  background: #F3F3F3;
}

#buchstabe {
  height: 250px;
}

.footer {
  margin: 2em 0;
  flex-direction: row;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1em;

  border-top: solid 1px #CCC;
  padding-top: 2em;
}

.ok {
  /* animation: ok-animation .5s; */
}

.not-ok {
  animation: not-ok-animation .5s;
}

@keyframes ok-animation {
  0% {
    box-shadow: 0 0 0 0px #77B25550;
  }
  100% {
    box-shadow: 0 0 0 15px rgba(0, 0, 0, 0);
  }
}

@keyframes not-ok-animation {
  0% {
    box-shadow: 0 0 0 0px #da353550;
  }
  100% {
    box-shadow: 0 0 0 15px rgba(0, 0, 0, 0);
  }
}