body {
  font-size: 16px;
  font-family: "Helvetica Neue", Helvetica, "Microsoft Yahei", "Hiragino Sans GB", "WenQuanYi Micro Hei", "sans-serif";
}
.show {
  width: 500px;
  height: 400px;
  border: 1px solid red;
  margin: 80px auto;
}
.show > .control {
  padding-left: 10px;
  height: 50px;
}
.show > .control button.button.black {
  width: 80px;
  height: 34px;
  line-height: 27px;
}
.show > .control button.button.black:last-child {
  margin-right: 0px;
}
.show > .data-show {
  position: relative;
  margin-left: 30px;
  height: 200px;
}
.show > .data-show > .d-s-position > .data {
  text-align: center;
  position: absolute;
  bottom: 0px;
  width: 20px;
  height: 0;
  transition: all .3s ease;
  background-color: yellowgreen;
}
.show > .data-show > .d-s-position > .point {
  display: inline-block;
  width: 0;
  height: 0;
  border-width: 10px;
  border-color: transparent transparent red transparent;
  border-style: solid;
  vertical-align: top;
  position: absolute;
  display: none;
  bottom: -10px;
}
.show > .data-show > .d-s-position > .point-l {
  border-color: transparent transparent green transparent;
}
.desc {
  width: 350px;
  height: 400px;
  background-color: #cccccc;
  position: absolute;
  top: 80px;
  right: 0px;
}