What is the correct position for the initial size of an HTML5 Canvas and its drawing?

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The initial size of an HTML5 Canvas should be set using CSS or JavaScript. The correct position and size for the canvas depends on the specific layout of the webpage and the desired placement of the canvas within that layout. The drawing on the canvas should be done using the canvas context and appropriate commands such as drawRect, fill, and stroke. The position and dimensions of each drawing element should be calculated and specified explicitly in the code.