html {
  height: 100%;
}

body {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  min-height: 100%;
}

.content {
  min-height: 100%;
  margin-top:60px;
  padding-bottom: 60px;
}

.exercise .content {
  margin-top: 30px;
}

a {
  text-decoration: none;
  color:#111;
}

.btn {
  background: #eee;
  padding: 5px 10px;
}

.btn.btn-rounded {
  display: inline-block;
  text-align: center;
  padding: 0;
  width: 80px;
  height: 80px;
  line-height: 70px;
  border-radius: 50%;
  margin: 0 5px 12px 0;
  font-size: 2em;
}

.numbers-wrapper {
  margin-bottom: 30px;
}

.medium-text {
  font-size: 1.5em !important;
  line-height: 1.5em !important;
}

.big-text {
  font-size: 2em;
  line-height: 2em;
}

.center {
  text-align: center;
}

.hidden {
  display: none !important;
}

.ico-correct, .ico-incorrect {
  vertical-align: middle;
}

.finish-btn, .dark-btn {
  background: #3c3c3c;
  color: #fff !important;
  text-shadow: none;
  border-color: #111;
}