Why Do Bootstrap Dropdowns Appear Behind Other Content in IE7?

Bootstrap Dropdowns Emerging Behind Other Content

Question:

Bootstrap dropdowns persistently appear behind other page elements, particularly in IE7. Despite applying z-index to the relevant CSS, the issue persists.

Answer:

This behavior stems from a stacking context issue. Although z-index affects elements within the same stacking context, the dropdown must be placed within a container with both z-index and position properties.

Solution:

Modify the CSS for the header-top div 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: 10000;
}</code>

By setting z-index and position for the header-top div, you establish a new stacking context within which the dropdown resides, ensuring that it always appears in front of page content.

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