How to understand the effect of overflow-x attribute and overflow-y attribute value in box attribute in CSS3

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The values of each property are as follows:

Visible: default value. Content is not cropped and may be displayed outside the content box.

Hidden: cut content-no scrolling mechanism is provided

Scroll: tailoring content-providing scrolling mechanism

Auto: if there is an overflow box, a scrolling mechanism should be provided, otherwise it will display normally

No-display: if the content does not fit the content box, delete the entire box, but the property value is not currently supported

No-content: if the content does not fit into the content box, the entire content is hidden, but the property value is not currently supported

What is worth talking about here is visible. We generally assign an attribute value to overflow-x and overflow-y to specify the horizontal and vertical display respectively. Only when visible is paired with visible will it have the effect of "fully displayed and displayed outside the box", otherwise it is equivalent to scroll, but in general, the box size in one direction is smaller than 51px will not show the scroll bar. Of course, no-display and no-content are not considered here, because they are not currently supported, so they are equivalent to the default value, visible.

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