如何实现默认显示git的第一帧图片，当鼠标经过时，播放完整的gif动画

"```html

Git GIF Hover .gif-container { position: relative; display: inline-block; } .gif-container img { display: block; } .gif-container img.full { display: none; position: absolute; top: 0; left: 0; } ```"