問題：
I'm a beginner at rails programming, attempting to show many images on a page.我是 Rails 編程的初學者，試圖在頁面上顯示許多圖像。 Some images are to lay on top of others.有些圖像要放在其他圖像之上。 To make it simple, say I want a blue square, with a red square in the upper right corner of the blue square (but not tight in the corner).爲了簡單起見，假設我想要一個藍色方塊，在藍色方塊的右上角有一個紅色方塊（但在角落處不緊）。 I am trying to avoid compositing (with ImageMagick and similar) due to performance issues.由於性能問題，我試圖避免合成（使用 ImageMagick 和類似的）。
I just want to position overlapping images relative to one another.我只想相對於彼此定位重疊的圖像。
As a more difficult example, imagine an odometer placed inside a larger image.作爲一個更困難的例子，想象一個里程錶放置在一個更大的圖像中。 For six digits, I would need to composite a million different images, or do it all on the fly, where all that is needed is to place the six images on top of the other one.對於六位數字，我需要合成一百萬張不同的圖像，或者即時完成所有操作，只需將六個圖像放在另一個圖像的頂部。
解決方案：
參考一： https://en.stackoom.com/question/Cbq參考二： https://stackoom.com/question/Cbq