* {
  box-sizing: border-box;
}
html,
body {
  min-height: 100vh;
  margin: 0;
  padding: 0;
}
body {
  font-family: Helvetica, Arial, sans-serif;
  color: #0d122b;
  display: flex;
  flex-direction: column;
  padding-left: 1em;
  padding-right: 1em;
  font-size: 0.9em;
}
h1 {
  text-align: center;
  font-weight: 100;
}
header {
  border-bottom: 1px solid #0d122b;
  margin-bottom: 0.5em;
}
main {
  flex-grow: 2;
  justify-content: space-around;
  align-items: center;
  background-color: #fff;
  border-radius: 0.3em
  margin-bottom: 0.5em;
  ppppadding-top: 0.75em;
  text-align: center;
}
@keyframes bg-pulse {
  0% {
    background-color: #fff;
  }

  50% {
    background-color: #aaecaa;
  }

  100% {
    background-color: #fff;
  }
}
#result {
  color: #666;
  font-style: italic;
  text-align: center;
}
#result .final {
  color: #0d122b;
  font-style: normal;
}
button {
  font-size: 1rem;
  font-weight: 200;
  padding: 0.25em;
  width: 15rem;
  background: transparent;
  border: 4px solid darkgreen;
  border-radius: 4px;
  transition: all 0.4s ease 0s;
  cursor: pointer;
  color: #000;
  margin: 0.5em 0;
}
button:hover{
  background: darkgreen;
  color: #fff;
}
.speaking {
  animation: bg-pulse 1.5s alternate ease-in-out infinite;
}

a {
  color: #0d122b;
}
.error {
  color: #f22f46;
  text-align: center;
}
footer {
  border-top: 1px solid #0d122b;
  text-align: center;
}

table {
    border-collapse: collapse; 
    border: 1px solid silver;
}

td {
    border: 1px solid silver;
    padding: 0.2em;
    text-align: left;
}
thead td{
    text-align: center;
}
td.zimmer {
    text-align: right;
}
tr.anwesend {
    background-color: rgba(0,200,0,0.75);
}