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Why Do My Bootstrap Dropdowns Appear Behind Other Elements in Internet Explorer 7?
Why Do My Bootstrap Dropdowns Appear Behind Other Elements in Internet Explorer 7?
Oct 27, 2024 am 06:08 AM
Bootstrap Dropdowns Appearing Behind Other Elements [Duplicate]
Issue:
In Bootstrap 2.3.1, dropdown menus created using the "dropdown-menu" class appear behind text and other elements on Internet Explorer 7 specifically, despite assigning a high z-index.
Diagnosis:
The problem stems from a stacking context issue. Even though the dropdown has a z-index, it only applies to elements within the same stacking context. In this case, the parent element of the dropdown needs an explicit z-index and position to establish a new stacking context.
Solution:
Modify the CSS as follows:
<code class="CSS">.header-top {
z-index: 10000;
position: relative;
}
.header .header-nav ul#nav-account ul.dropdown-menu,
.header .header-nav ul#nav-library ul.dropdown-menu {
z-index: 1;
}</code>
By setting "z-index: 10000" and "position: relative" on ".header-top," a new stacking context is created. The dropdown menus within this context are then assigned a "z-index: 1" to ensure they are positioned in front of any other content in that context. This establishes the desired layering and resolves the issue in Internet Explorer 7.
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