html, body, #map-canvas {
  height: 100%;
  margin: 0px;
  padding: 0px
}

.topper {
  height: 5%;
}

.drawer {
  background-color: #fff;
  height: 95%;
  overflow-y: scroll;
  position: absolute;
  transform: translate(-300px, 0);
  transition: transform 0.3s ease;
  width: 300px;
  will-change: transform;
  z-index: 10;
  -webkit-transform: translate(-300px, 0);
}

.drawer.open {
  -webkit-transform: translate(0, 0);
  transform: translate(0, 0);
}

.location-list {
  list-style: none;
  width: 100%;
  padding: 0;
  margin: 0;
}

.location-item {
  border-bottom: 1px solid #E0E0E0;
  box-sizing: border-box;
  display: list-item;
  line-height: 24px;
  padding: 24px;
  text-align: left;
  width: 100%;
}

#map-canvas {
  height: 95%;
}
/* Whole document */
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

/* Mobile top area */
.topper {
  background-color: #f53c24;
  height: 48px;
  text-align: right;
}

.hamburger {
  color: #fff;
  display: inline-block;
  font-size: 1.8em;
  height: 48px;
  line-height: 48px;
  text-align: center;
  width: 48px;
}

/* Drawer */
.drawer {
  background-color: #fff;
  height: calc(100% - 48px);
  overflow-y: scroll;
  position: absolute;
  transform: translate(-300px, 0);
  transition: transform 0.3s ease;
  width: 300px;
  will-change: transform;
  z-index: 10;
  -webkit-transform: translate(-300px, 0);
}

.drawer.open {
  -webkit-transform: translate(0, 0);
  transform: translate(0, 0);
}

.location-list {
  list-style: none;
  width: 100%;
  padding: 0;
  margin: 0;
}

.location-item {
  border-bottom: 1px solid #E0E0E0;
  box-sizing: border-box;
  display: list-item;
  line-height: 24px;
  padding: 24px;
  text-align: left;
  width: 100%;
}

/* Map */
#map-canvas {
  height: calc(100% - 48px);
  margin: 0;
  padding: 0;
}
Change color and alignment in top bar
feat: Change color and alignment in top bar
