css cursor 的可选值（鼠标的各种样式）

向上改变大小(North)

The cursor indicates that an edge of a box is to be moved up (north)
边缘可向上移动(北)

cursor: s-resize;

向下改变大小(South)

The cursor indicates that an edge of a box is to be moved down (south)
边缘可向下方移动(南)

cursor: e-resize;

向右改变大小(East)

The cursor indicates that an edge of a box is to be moved right (east)
box边缘可向右(东)边移动

cursor: w-resize;

向左改变大小(West)

The cursor indicates that an edge of a box is to be moved left (west)
边缘可向左移动(西)

cursor: ne-resize;

向上右改变大小(North East)

The cursor indicates that an edge of a box is to be moved up and right (north/east)
游标暗示box的边缘可向右上方移动(东北方向)

cursor: nw-resize;

向上左改变大小(North West)

The cursor indicates that an edge of a box is to be moved up and left (north/west)
边缘可向左上方移动(西北)

cursor: se-resize;

向下右改变大小(South East)

The cursor indicates that an edge of a box is to be moved down and right (south/east)
边缘可向右下方移动(东南)

cursor: sw-resize;