.dev_su_bg{
    margin: 0px;
    padding: 0px;
    position: relative;
    border:1px dashed transparent;
    top: 0;
    left: 0;
    overflow:hidden;
}

.dev_res_space{
    margin: 0px;
    padding: 0px;
    position: absolute;
    border:1px dashed transparent;
    top: 0;
    left: 0;
    overflow:hidden;
	display: none;
}

.dev_res_dom_trans{
    margin: 0px;
    padding: 0px;
    position: absolute;
    border:1px dashed transparent;
    top: 0;
    left: 0;
    width:100%;
    height:100%;
}

.dev_res_svg_trans{
    margin: 0px;
    padding: 0px;
    position: absolute;
    border:1px dashed transparent;
    top: 0;
    left: 0;
    width:100%;
    height:100%;
}

.dev_res_img_trans{
    margin: 0px;
    padding: 0px;
    position: absolute;
    border:1px dashed transparent;
    top: 0;
    left: 0;
    width:100%;
    height:100%;

    background-repeat:no-repeat;
    background-position:center;
    background-size:contain;
}

.dev_res_mask{
    position:absolute;
    left:0;
    top:0;
    width:100%;
    height:100%;
    border: 0px;
    margin: 0px;
    padding: 0px;
}

.dev_res_a_img{
    position:absolute;
    left:0;
    top:0;
    width:100%;
    height:100%;
    border: 0px;
    margin: 0px;
    padding: 0px;

}

.dev_res_a_dom{
    position:absolute;
    left:0;
    top:0;
    width:100%;
    height:100%;
    border: 0px;
    margin: 0px;
    padding: 0px;
}

.dev_res_a_sel{
    width:15;
    height:15;
    border:1px solid red;
    background-color: white;
}