.filter {
  overflow: hidden;
  margin: auto;
  text-align: center;
}

.search {
  margin-top: 1.5rem;
  display: inline-block;
  font-size: 1rem;
  padding: 0.5rem 1rem;
  min-width: 400px;
}

.search_button {
  top: -5px;
  display: inline-block;
  font-size: 1rem;
  border-style: solid;
  border-width: 0px;
  cursor: pointer;
  font-family: "Helvetica Neue",Helvetica,Roboto,Arial,sans-serif;
  margin-top: -5px;
  position: relative;
  padding: 0.65rem 1.5rem;
  font-size: 1rem;
  background-color: #008cba;
  border-color: #007095;
  color: #fff;
}

.viz {
  margin: 1rem auto;
  /*text-align: center;*/
}
svg {
  border: solid thin lightgrey;
}

.node circle {
  cursor: pointer;
  stroke: #20221E;
  stroke-width: 1.5px;
}

.node text {
  font: 10px sans-serif;
  pointer-events: none;
  text-anchor: middle;
}

line.link {
  fill: none;
  stroke: #9ecae1;
  stroke-width: 1.5px;
}
.d3-tip {
  line-height: 1;
  font-size: 14px;
  padding: 10px;
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  border-radius: 2px;
  pointer-events: none;
  font-family: 'Helvetica', sans-serif;
}