


How to Create a CSS3 Box-Shadow on All Sides of an Element Except the Bottom?
Nov 06, 2024 am 05:03 AMCreating a CSS3 Box-Shadow on All Sides But One: A Comprehensive Solution
Problem: Designing a tabbed navigation bar, you need to highlight the open tab with a CSS3 box-shadow. However, you want to exclude the bottom shadow of the open tab to avoid obscuring a shadowed content area.
Approach:
To achieve this, we can utilize a combination of positioning and box-shadow properties.
Implementation:
- Create a element within the #content div and assign it the following style:
<code class="css">#content_over_shadow { position: relative; /* Positions the element relative to its parent */ background:#fff; /* Sets a solid background to prevent transparency */ }</code>
- Adjust #content style and add a box-shadow:
<code class="css">#content { box-shadow: 0 0 8px 2px #888; /* Shadow for the bottom line */ }</code>
- Apply shadows to the tabs:
<code class="css">#nav li a { box-shadow: 0 0 8px 2px #888; /* Shadow for each tab */ background:#FFF; /* Ensure a solid background for shadow visibility */ }</code>
Explanation:
The relative positioning of #content_over_shadow allows it to overlap the shadowed #content div. By setting a solid background, we block the transparency of #content, allowing the shadow to be visible.
Adding box-shadow properties to each tab highlights the open tab while maintaining shadows on all other tabs. You can adjust the offset, spread, and color of the box-shadows to customize the appearance.
The above is the detailed content of How to Create a CSS3 Box-Shadow on All Sides of an Element Except the Bottom?. For more information, please follow other related articles on the PHP Chinese website!

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