<style> #mycar { border: 1px solid gray; width: 50px; height: 30px; position: absolute; left: 0px; top: 0px; } #myblock { border: 1px solid gray; width: 640px; height: 480px; position: relative; } <script> var myblock, mycar, res, outsidew, outsideh, carw, carh; </script> <h1>物品沿著框線慢慢移動的效果</h1> <div id='myblock'> <div id='mycar'></div> </div> <div id='res'></div>