main {
  display: flex;
  flex-wrap: nowrap;
  height: 100vh;
  height: -webkit-fill-available;
  max-height: 100vh;
  overflow-x: auto;
  overflow-y: hidden;
}

#sidebar {
  position: fixed;
  width: 280px;
  z-index: 1;
  left: 0;
  top: 56px;
  height: 100%;
}

.bi {
  vertical-align: -.125em;
  pointer-events: none;
  fill: currentColor;
}

.dropdown-toggle { outline: 0; }