.gutter{background-color:var(--gutter-background-color,#eee);background-repeat:no-repeat;background-position:50%;border:none;transition:background-color .2s ease}.gutter:hover{background-color:var(--gutter-hover-color,#ddd)}.gutter.gutter-horizontal{background-image:none;cursor:col-resize}.gutter.gutter-vertical{background-image:none;cursor:row-resize}