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Why is nothing working as is shown in the video?
For example, when I changed the 0% background-position value to -560px as is shown at @1:47 in this video. The boat began to move upwards whilst simultaneously moving left. Also the -webkit vendor prefix needs to be removed to animate the body's background. Why? Could this be that chrome no longer needs certain vender prefixes? If so, this should be mentioned at the beginning of the course. Otherwise, students will no longer be able to follow the lessons.....
Jaime RiosCourses Plus Student 21,100 Points
Yep, as you said, by prefixes used, I assume that when the video was recorded, animations were not fully supported by modern browsers, now it is. I recommend you to check every new function you want to implement at www.caniuse.com