@webscopeio/react-textarea-autocomplete/style.css

Offers autocomplete over textarea in style of GitHub.

.rta {
  position: relative;
  font-size: 18px;
  width: 100%;
  height: 100%;
}
.rta__loader.rta__loader--empty-suggestion-data {
  border-radius: 3px;
  box-shadow: 0 0 5px rgba(27, 31, 35, 0.1);
  padding: 5px;
}
.rta--loading .rta__loader.rta__loader--suggestion-data {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.8);
}
.rta--loading .rta__loader.rta__loader--suggestion-data > * {
  position: relative;
  top: 50%;
}
.rta__textarea {
  width: 100%;
  height: 100%;
  font-size: 1em;
}
.rta__autocomplete {
  position: absolute;
  display: block;
  margin-top: 1em;
}
.rta__autocomplete--top {
  margin-top: 0;
  margin-bottom: 1em;
}
.rta__list {
  margin: 0;
  padding: 0;
  background: #fff;
  border: 1px solid #dfe2e5;
  border-radius: 3px;
  box-shadow: 0 0 5px rgba(27, 31, 35, 0.1);
  list-style: none;
}
.rta__entity {
  background: white;
  width: 100%;
  text-align: left;
  outline: none;
}
.rta__entity:hover {
  cursor: pointer;
}
.rta__item:not(:last-child) {
  border-bottom: 1px solid #dfe2e5;
}
.rta__entity > * {
  padding-left: 4px;
  padding-right: 4px;
}
.rta__entity--selected {
  color: #fff;
  text-decoration: none;
  background: #0366d6;
}