After following, you can keep track of his dynamic information in a timely manner
Courses in the relevant section：The structure of HTML5 documents
htmllang 当前文档语言是什么
2019-01-200个赞
Courses in the relevant section：Introduction to video tag <video>
video src=“视屏路径” controls视屏控制按钮 autoplay 视屏加载之后自动播放<-冲突-> preload预加载 mute静音播放 poster=“封面路径”loop循环播放
2019-01-210个赞
