.rb-border { border: 1px solid #DFE4ED; }
.rb-border-t { border-top: 1px solid #DFE4ED; }
.rb-border-r { border-right: 1px solid #DFE4ED; }
.rb-border-b { border-bottom: 1px solid #DFE4ED; }
.rb-border-l { border-left: 1px solid #DFE4ED; }

/* 隐藏滚动条但保留滚动功能 */
div {
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
}
div::-webkit-scrollbar {
  display: none; /* Chrome/Safari/Opera */
}