


There are gaps in three divs in the Vant Popup component: What CSS style is causing it?
Apr 05, 2025 pm 11:12 PMGuide to troubleshooting gaps in three divs in Vant Popup component
When using the Popup component of the Vant framework, you often encounter a problem: unexpected gaps occur between the three divs with the same structure and style contained in the Popup component. This article will analyze this issue and provide troubleshooting methods.
The code example shows the layout using the Vant Popup component and three divs ( cp-coupon-dialog_header
, cp-coupon-dialog_list
, cp-coupon-dialog_footer
). These three divs have the same width (578px) and the height (182px). The background color is black, but when actually running, there is a white gap between the divs.
This problem is not a code error, but a potential issue with CSS style. The key to the solution is to check the browser developer tools to see if there are unanticipated borders, inner margins, outer margins, or pseudo-class styles.
The following aspects need to be carefully examined:
Border: Even if the code does not explicitly set the border, the border settings of the parent or ancestor element, or
box-sizing: content-box;
(default) causes the content area to overlay the border, resulting in a gap. You need to check the style ofcp-coupon-dialog
and all parent elements to see ifborder
attribute exists.Inner margins:
cp-coupon-dialog_header
,cp-coupon-dialog_list
, andcp-coupon-dialog_footer
may set inner margins to enlarge the content area, thereby creating gaps. Check the styles of these three divs to see ifpadding
attribute exists.Margin: Similar to inner margins, margins may also cause gaps. Pay special attention to the overlap of margins of adjacent elements that may magnify gaps. Check the styles of these three divs, see if there is a
margin
property, and carefully check the overlap of margins.Browser default gap: Some browsers will automatically add tiny gaps between elements, which are difficult to detect. You can use
font-size: 0;
or flex layout/grid layout to eliminate such gaps.Pseudo-classes:
:before
and:after
may accidentally add content or styles, resulting in gaps. Check the relevant CSS to see if there is a style using pseudo-classes.
Use browser developer tools to check the computed styles of elements, which can clearly view the actual size, margins and other information of each div, and quickly locate problems. After finding the specific style that caused the gap, modify or delete the style to solve the problem.
The above is the detailed content of There are gaps in three divs in the Vant Popup component: What CSS style is causing it?. For more information, please follow other related articles on the PHP Chinese website!

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