#closed-eulerian-trail svg {
  display: block;
  margin: auto;
}

.edge {
  stroke: #aaa;
  stroke-width: 3px;
  cursor: pointer;
}

.edge:hover {
  stroke: #333;
  stroke-width: 3px;
}

.vertex {
  cursor: pointer;
}

.vertex:hover {
  stroke: #333;
  opacity: 1;
}

.vertex text {
  text-anchor: middle;
  pointer-events: none;
  font-size: 10px;
  font-weight: bold;
  stroke: none;
}

.walk-edge {
  stroke: #333;
}

.walk-vertex {
  stroke: #333;
  stroke-width: 3px;
}

.walk-start {
  stroke: #ff0;
  stroke-width: 5px;
}

.walk-end {
  stroke: #8f3;
  stroke-width: 5px;
}

#prob-list a {
  cursor: pointer;
  margin-left: 8px;
  border: 3px solid #ccc;
  color: #333;
}

#prob-list a.prob-solved {
  border-color: #2ca02c;
}

#prob-list a.prob-current {
  border-color: #1f77b4 !important;
}

#eulerian-circuit-wrap svg {
  display: block;
  margin: auto;
  border: 1px solid #dee2e6;
}

#eulerian-circuit-buttons {
  text-align: center;
  margin-top: 10px;
  margin-bottom: 10px;
}

#eulerian-circuit-buttons .btn {
  display: inline-block;
  padding: 6px 12px;
  margin-bottom: 0;
  font-size: 14px;
  font-weight: 400;
  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;
}

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