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横向滚动.parent { width: 100%; margin-top: .3rem; margin-bottom: .3rem; white-space: nowrap; overflow: hidden; overflow-x: auto; overflow-x: scroll; -webkit-overflow-scrolling: touch; padding: 0 .3rem; overflow-y: hidde

css改变滚动条样式.steps_num::-webkit-scrollbar{ width: 4px; height: 4px;}.steps_num::-webkit-scrollbar-track{ background: #fff; border-radius:2px;}.steps_num::-webkit-scrollbar-thumb{ background: #fcfcfc; border-radius:10px;}.steps_