.text-center { text-align: center; }
.text-right { text-align: right; }
.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.w-100 { width: 100%; }
.d-block { display: block; }
.d-none { display: none; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.is-muted { color: #868686; }