shengnian-editor/lib/ui/Dropdown.css

Shengnian React Rich Text Editor

.root {
  display: inline-block;
  position: relative;
  line-height: 22px;
  vertical-align: top;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.root select {
  position: relative;
  z-index: 2;
  display: inline-block;
  box-sizing: border-box;
  height: 30px;
  line-height: inherit;
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  margin: 0;
  padding: 0;
  border: 4px solid transparent;
  border-right-width: 10px;
  border-left-width: 5px;
  background: none transparent;
  opacity: 0;
  cursor: pointer;
}

.root .value {
  display: block;
  position: absolute;
  z-index: 1;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  line-height: 23px;
  border: 1px solid #999;
  border-radius: 2px;
  padding: 3px;
  padding-right: 33px;
  padding-left: 12px;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.root .value::before,
.root .value::after {
  display: block;
  content: "";
  position: absolute;
  top: 50%;
  right: 10px;
  width: 0;
  height: 0;
  border: 4px solid transparent;
}

.root .value::before {
  margin-top: -10px;
  border-bottom-color: #555;
}

.root .value::after {
  margin-top: 1px;
  border-top-color: #555;
}

.root select:focus + .value {
  border-color: #66afe9;
}

/* On Webkit we can style <select> to be transparant without turning off the
   default focus styles. This is better for accessibility. */
@media screen and (-webkit-min-device-pixel-ratio:0) {
  .root select {
    opacity: 1;
    color: inherit;
    -webkit-appearance: none;
    border-left-width: 12px;
    border-right-width: 35px;
  }

  .root select + .value {
    color: transparent;
  }

  .root select:focus + .value {
    border-color: #999;
  }
}