.flex,
.flex-row,
.flex-column,
.flex-center-xy,
.flex-center-between,
.flex-top-between {
  display: flex;
}
.flex-row {
  flex-direction: row;
}
.flex-column {
  flex-direction: column;
}
.flex-left {
  justify-content: flex-start;
}
.flex-center,
.flex-center-xy {
  justify-content: center;
}
.flex-right {
  justify-content: flex-end;
}
.flex-space-between,
.flex-center-between,
.flex-top-between {
  justify-content: space-between;
}
.flex-space-around {
  justify-content: space-around;
}
.flex-top,
.flex-top-between {
  align-items: flex-start;
}
.flex-middle,
.flex-center-xy,
.flex-center-between {
  align-items: center;
}
.flex-bottom {
  align-items: flex-end;
}
.flex-stretch {
  align-items: stretch;
}
.flex-nowrap {
  flex-wrap: nowrap;
}
.flex-wrap {
  flex-wrap: wrap;
}
.flex-full {
  flex: 1;
}
.triangle-top {
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-bottom: 5px solid #999;
}
.triangle-bottom {
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid #999;
}
.arrow-bottom {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border: 0 solid #cecece;
  border-width: 2px 2px 0 0;
  border-radius: 1px;
  transform: translate(5px, -2px) rotate(135deg);
}
.arrow-top {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border: 0 solid #cecece;
  border-width: 2px 2px 0 0;
  border-radius: 1px;
  transform: translate(5px, 0) rotate(-45deg);
}
.arrow-select {
  border-color: #0188ff;
}
.side-vertical {
  display: inline-block;
  position: absolute;
  left: 0;
  width: 4px;
  height: 18px;
  background: #0188ff;
  border-radius: 0 4px 4px 0;
}
.side-directory {
  background: #fff;
  position: relative;
  overflow: hidden;
}
.side {
  width: 80px;
  height: 300px;
}
.side-item {
  width: 80px;
  height: 50px;
  font-size: 12px;
  color: #666;
  background: #fafafa;
}
.side-item-last {
  height: 100%;
  background: #fafafa;
}
.side-item-select {
  background: #fff;
}
.side-item-select__first {
  border-radius: 0 0 20px 0;
}
.side-item-select__after {
  border-radius: 0 20px 0 0;
}
.container {
  padding: 15px 10px 15px;
}
.con-item {
  border: 1px solid #dadada;
  border-radius: 3px;
  font-size: 14px;
  color: #323232;
  padding: 7px 15px;
  margin: 0 0 15px 15px;
}
.con-item.con-item__select {
  background: rgba(1,136,255,0.1);
  border: 1px solid #0188ff;
  color: #0188ff;
}
.operate {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 8px 12px;
  background: #fff;
  box-sizing: border-box;
}