ember-select/addon/styles/x-select.css

Select component

.ember-select {
  position: relative;
}

.es-control {
  background-color: #fff;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
  color: #333;
  cursor: text;
  display: table;
  height: 36px;
  outline: none;
  overflow: hidden;
  padding: 6px 12px;
  position: relative;
  table-layout: fixed;
  width: 100%;
  z-index: 5;
}

.es-control:hover {
  box-shadow: 0 1px 0 rgb(0 0 0 / 6%);
}

.es-input > input {
  border: 0 none;
  font-family: inherit;
  font-size: inherit;
  outline: none;
  width: 100%;
}

.es-select input {
  cursor: pointer;
}

.es-multiple .es-control {
  padding: 4px 12px;
}

.es-multiple .es-input > input {
  width: auto;
}

.es-open > .es-control {
  background: #fff;
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  border-color: #b3b3b3 #ccc #d9d9d9;
}

.es-focus:not(.es-open) > .es-control {
  border-color: #0099e6;
  box-shadow:
    inset 0 1px 2px rgb(0 0 0 / 10%),
    0 0 5px -1px rgb(0 136 204 / 50%);
}

.es-selections {
  margin-right: 1rem;
}

.es-selections span {
  border: 1px solid #ccc;
  border-radius: 4px;
  cursor: pointer;
  display: inline-block;
  margin: 2px 0;
  padding: 0 6px;
}

.es-selections span:hover {
  background-color: #e6e6e6;
  border-color: #adadad;
}

.es-focus .es-input > input {
  cursor: text;
}

.es-select,
.es-select .es-control .es-input > input {
  cursor: pointer;
}

/* Clear */
.es-clear-zone {
  color: #999;
  cursor: pointer;
  display: table-cell;
  position: relative;
  text-align: center;
  vertical-align: middle;
  width: 20px;
}

.es-clear-zone:hover {
  color: #d0021b;
}

.es-clear {
  display: inline-block;
  font-size: 16px;
  line-height: 1;
}

/* Options */
.es-options {
  background-color: #fff;
  border: 1px solid #ccc;
  border-bottom-left-radius: 4px;
  border-bottom-right-radius: 4px;
  border-top-color: #e6e6e6;
  box-shadow: 0 1px 0 rgb(0 0 0 / 6%);
  box-sizing: border-box;
  margin-top: -2px;
  max-height: 200px;
  -webkit-overflow-scrolling: touch;
  overflow-x: auto;
  position: absolute;
  top: 100%;
  width: 100%;
  z-index: 10;
}

.es-option {
  cursor: pointer;
  display: block;
  padding: 0.25rem 1.5rem;
}

.es-option:last-child {
  border-bottom-left-radius: 4px;
  border-bottom-right-radius: 4px;
}

.es-options .es-highlight {
  background-color: #f2f9fc;
  color: #333;
}

/* Dropdown */
.es-arrow-zone {
  cursor: pointer;
  display: table-cell;
  position: relative;
  text-align: center;
  vertical-align: middle;
  width: 20px;
}

.es-arrow {
  border-color: #999 transparent transparent;
  border-style: solid;
  border-width: 5px 5px 2.5px;
  display: inline-block;
  height: 0;
  width: 0;
}

.es-open .es-arrow,
.es-arrow-zone:hover > .es-arrow {
  border-top-color: #666;
}

/* Groups */
.es-group {
  font-weight: bold;
  padding: 1rem 0 0 0.5rem;
}