The spider in this HTML Animation uses keyframes to give the impression it's climbing. It may look complicated in the timeline but it's simple to achieve. We simply set the start and end positions of the spider, then in the timeline double clicked at intervals along the black transition line to create key frames. Then we could edit each keyframe, in this case making alternate spider frames visible or invisible. This whole animation only took 30 minutes to create. Download the project below for a closer look.