// 统一添加flex布局样式
.flex-row {
  display: -webkit-box;
  display: -webkit-flex;
  display: flex;
  -webkit-box-orient: horizontal;
  flex-direction: row;
}

.flex-col {
  display: -webkit-box;
  display: -webkit-flex;
  display: flex;
  -webkit-box-orient: vertical;
  flex-direction: column;
}

.flex-grow-0 {
  min-width: 0;
  -webkit-box-flex: 0;
  flex-grow: 0;
  flex-shrink: 0;
}

.flex-grow-1 {
  min-width: 0;
  -webkit-box-flex: 1;
  flex-grow: 1;
  flex-shrink: 1;
}

.flex-x-center {
  display: -webkit-box;
  display: -webkit-flex;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
}

.flex-y-center {
  display: -webkit-box;
  display: -webkit-flex;
  display: flex;
  align-items: center;
}

.flex-y-bottom {
  display: flex;
  align-items: flex-end;
}