iframe在div里高度100%时外面的div出现滚动条的解决方法

                                    #frameCommunicate {
                                        padding: 0px;
                                        margin: 0px;
                                        width: 100%;
                                        height: 100%;
                                        border-style: none;
                                        border-width: 0px;
                                        box-sizing: border-box;
                                        display: block
                                    }

加上这句：display: block