2023年6月21日发(作者：)

css左右箭头.record-left{ content: ""; width: 0; height: 0; float: left; border-top: 10px solid transparent; border-right: 10px solid red; border-bottom: 10px solid transparent; margin-top:5px;}

.record-right{ content: ""; width: 0; height: 0; float: right; border-top: 10px solid transparent; border-left: 10px solid red; border-bottom: 10px solid transparent; margin-top:5px; margin-right: 25px;}

2023年6月21日发(作者：)

css左右箭头.record-left{ content: ""; width: 0; height: 0; float: left; border-top: 10px solid transparent; border-right: 10px solid red; border-bottom: 10px solid transparent; margin-top:5px;}

.record-right{ content: ""; width: 0; height: 0; float: right; border-top: 10px solid transparent; border-left: 10px solid red; border-bottom: 10px solid transparent; margin-top:5px; margin-right: 25px;}