简单粗暴，分享给大家
<el-dialog class="dialogClass">
.dialogClass { .el-dialog { .el-dialog__body { //border-top: 1px solid #dcdfe6; //border-bottom: 1px solid #dcdfe6; max-height: 500px !important; min-height: 100px; overflow-y: hidden; } } }
原文：https://www.cnblogs.com/ahmed/p/15213323.html