body,
html,
h1,
h2 {
  margin: 0;
  padding: 0;
  font-family: 'Roboto Slab', serif;
}

#header {
  background-color: #2d2d2d;
  color: white;
  text-align: center;
}

#container {
  text-align: center;
  margin: 20px;
}

#error {
  text-align: center;
  display: none;
  color: red;
}

#output {
  width: 400px;
  margin: 0 auto;
}

#footer {
  margin-top: 40px;
  padding-top: 40px;
  padding-bottom: 40px;
  font-size: 12px;
  line-height: 1.5;
  color: #777;
  border-top: 1px solid #eee;
  text-align: center;
}

input {
  outline: none;
  padding: 10px;
  font-size: 16px;
  height: 11px;
  width: 300px;
  vertical-align: middle;
}

.btn {
  display: inline-block;
  padding: 6px 12px;
  margin-bottom: 0;
  font-size: 14px;
  font-weight: normal;
  line-height: 1.42857143;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  -ms-touch-action: manipulation;
  touch-action: manipulation;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  background-image: none;
  border: 1px solid transparent;
  border-radius: 4px;
}

.btn:focus,
.btn:active:focus,
.btn.active:focus,
.btn.focus,
.btn:active.focus,
.btn.active.focus {
  outline: thin dotted;
  outline: 5px auto -webkit-focus-ring-color;
  outline-offset: -2px;
}

.btn:hover,
.btn:focus,
.btn.focus {
  color: #333;
  text-decoration: none;
}

.btn:active,
.btn.active {
  background-image: none;
  outline: 0;
  -webkit-box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
  box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
}

.btn.disabled,
.btn[disabled],
fieldset[disabled] .btn {
  pointer-events: none;
  cursor: not-allowed;
  filter: alpha(opacity=65);
  -webkit-box-shadow: none;
  box-shadow: none;
  opacity: .65;
}

.btn-default {
  color: #333;
  background-color: #fff;
  border-color: #ccc;
}

.btn-default:hover,
.btn-default:focus,
.btn-default.focus,
.btn-default:active,
.btn-default.active,
.open>.dropdown-toggle.btn-default {
  color: #333;
  background-color: #e6e6e6;
  border-color: #adadad;
}

.btn-default:active,
.btn-default.active,
.open>.dropdown-toggle.btn-default {
  background-image: none;
}

.btn-default.disabled,
.btn-default[disabled],
fieldset[disabled] .btn-default,
.btn-default.disabled:hover,
.btn-default[disabled]:hover,
fieldset[disabled] .btn-default:hover,
.btn-default.disabled:focus,
.btn-default[disabled]:focus,
fieldset[disabled] .btn-default:focus,
.btn-default.disabled.focus,
.btn-default[disabled].focus,
fieldset[disabled] .btn-default.focus,
.btn-default.disabled:active,
.btn-default[disabled]:active,
fieldset[disabled] .btn-default:active,
.btn-default.disabled.active,
.btn-default[disabled].active,
fieldset[disabled] .btn-default.active {
  background-color: #fff;
  border-color: #ccc;
}

.btn-default .badge {
  color: #fff;
  background-color: #333;
}


#loader {
  border: 2px solid #f3f3f3;
  border-top: 2px solid #3498db;
  border-radius: 50%;
  width: 16px;
  height: 16px;
  animation: spin 2s linear infinite;
  margin: auto;
  left: 0;
  right: 0;
  top: 2;
  bottom: 2;
  position: fixed;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}