.hpto_bg{
            position: fixed;
            display: inline-block;
            min-height: 100%;
            bottom: auto;
            overflow-x: hidden;
            overflow-y: hidden;
            background-repeat: no-repeat;
            background-color: #FFFFFF;
            }
                              .hpto_bg.left{
                        left: 0px;
                        top: 0px;
                        background-image: url('/hpto/projects/760/bg_left.jpg');
                        background-position: right 0px;
                                                      box-shadow: inset -10px 10px 15px rgba(0,0,0,0.2);
                                                background-repeat: no-repeat;
                        width: calc(50% - 675px);
                                                      cursor: pointer;
                                                }
                                                .hpto_bg.right{
                              right: 0px;
                              top:0px;
                              background-image: url('/hpto/projects/760/bg_right.jpg');
                              background-position: left 0px;
                                                            box-shadow: inset 10px 10px 15px rgba(0,0,0,0.2);
                                                            background-repeat: no-repeat;
                              width: calc(50% - 675px);
                                                            cursor: pointer;
                                                      }