复制代码代码如下: .devise-welcome-triangle{ border-right: #ccc 8px solid !important; border-top: transparent 6px solid !important; border-bottom: transparent 6px solid !important; margin-left: -8px; float: left; z-index: 1000; position: relative; margin-top: 12px; width: 0px; height: 0px; } .devise-welcome-
