app.css

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
a {
  text-decoration: none;
  color: #4285F4;
}
.map {
  height: 100vh;
  position: relative;
}
#map {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 120px;
  left: 0;
  background-size: cover;
  display: flex;
  align-items: center;
  justify-content: center;
}
#states {
  fill: #DEDEDE;
}

#states .active {
  fill: orange;
}

#state-borders {
  fill: none;
  stroke: #fff;
  stroke-width: 1.5px;
  stroke-linejoin: round;
  stroke-linecap: round;
  pointer-events: none;
}
.bar {
  fill: #7BC8FB;
}
.selection {
  -webkit-appearance: none;
  appearance: none;
  border: 0;
  background: #fff url(select.svg) no-repeat 250px center;
  border-radius: 2px;
  width: 300px;
  padding: 12px 20px;
  z-index: 2;
  font: 15px 'Oswald';
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2), 0 -1px 0px rgba(0,0,0,0.02);
  height: 56px;
  margin-right: 40px;
}
.selection--city {
}
.selection:focus,
.selection:hover {
  box-shadow: 0 2px 4px rgba(0,0,0,0.25), 0 -1px 0px rgba(0,0,0,0.025);
}

.selection:before {
  content: '';
  width: 20px;
  height: 20px;
  background: red;
}
.selection:focus {
  outline: none;
}
.selection option {
  padding: 12px;
  display: block;
}
#widget {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
}
#time_series {
  padding: 40px;
  background: red;
}
.tabs {
  display: flex;
  list-style-type: none;
  margin: 0 40px;
}
.tabs li {
  margin-right: 40px;
  font: 20px 'Oswald';
  padding: 0 0 10px 0;
}
.tabs li button {
  border: none;
  font: 20px 'Oswald';
  color: #7BC8FB;
}
.tabs li.selected button {
  color: #000;
}
.tabs li:last-child {
  margin-right: 0;
}
#onboarding {
  display: flex;

app.js

index.html

select.svg

select_hover.svg

us-states.json