.gutter{background-color:#eee;background-repeat:no-repeat;background-position:50%;cursor:col-resize}.gutter.gutter-vertical{background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAFAQMAAABo7865AAAABlBMVEVHcEzMzMzyAv2sAAAAAXRSTlMAQObYZgAAABBJREFUeF5jOAMEEAIEEFwAn3kMwcB6I2AAAAAASUVORK5CYII=)}.gutter.gutter-horizontal{background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAeCAYAAADkftS9AAAAIklEQVQoU2M4c+bMfxAGAgYYmwGrIIiDjrELjpo5aiZeMwF+yNnOs5KSvgAAAABJRU5ErkJggg==)}.split{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}