div.mapperButtons{z-index:200;width:var(--burgersize);position:fixed;left:0;top:0;margin:0;padding:0;margin-top:var(--burgersize);}
img.mapperButton{background:rgba(255,255,255,0.5);border-radius:var(--burgersize);cursor:pointer;width:var(--burgersize);height:var(--burgersize);margin:0;padding:0;border:none;outline:0;vertical-align:bottom;}
img.mapperButton:hover{background:black;}
img.mapperCell{vertical-align:bottom;pointer-events:none;padding:0;}
table.mapperGrid{position:relative;left:0;top:0;user-select:none;}