Solving the problem that CSS in DIV cannot display the background color

DIV CSS cannot display the background color problem analysis and solution DIVCSS5 experience tutorial

div css novice layout will encounter the background color of the layout cannot be displayed, the general layout background cannot be displayed, the usual reasons are as follows:

1. The css background color cannot be displayed due to floating caused by the use of float
2. The background cannot be displayed due to insufficient height

Next, we will introduce the reasons and solutions for the inability to display the background color or image.

Assume that the background color style is set for an object, and the internal box of the object has a float attribute style. At this time, The object floats, causing the object to not be opened, so the css background color cannot be displayed. There are three solutions. One is to set clear to clear the float, set the css height, and set the css overflow style.

Detailed tutorial can be entered: css clear float

Cause analysis:
If you have an object The height is not calculated (or a very small height attribute style is accidentally set), because it is not certain how much content there is. When the content exceeds the height limit you set, the part of the background that exceeds the height limit may not be displayed.

Solution:
Set a high enough height, or cancel the deletion of the height style.

If you want to limit the height, but don’t want too much content to overflow, you can set the height limit. Solution tutorial:
css hides content that overflows beyond the DIV border

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