使用padding和float处理带有间隙的多块布局

、

每个间隙都是20px

                                 <div class="action-content pd10" style="">
                                    <div class="pd10" style="height: 100%; 50%;float: left;box-sizing: border-box;">
                                        <div style="border:1px dashed indigo;height: 100%; 100%;"></div>
                                    </div>
                                    <div class="pd10" style="height: 30%; 50%;float: left;box-sizing: border-box;">
                                        <div style="border:1px dashed indigo;height: 100%; 100%;"></div>
                                    </div>
                                    <div class="pd10" style="height: 70%; 50%;float: left;box-sizing: border-box;">
                                        <div style="border:1px dashed indigo;height: 100%; 100%;"></div>
                                    </div>
                                </div>

pd10 对应padding:10px;