textarea classtextarea placeholder请输入您的意见... placeholder-stylecolor:#999 bindinputbindContentInput value{{content}} auto-height /textarea样式.textarea { width: 90%; height: 200rpx; border: 1rpx solid #ddd; border-radius: 8rpx; padding: 15rpx; font-size: 24rpx; color: #333; resize: none; background-color: #f9f9f9; }效果图如下