A parent element must control the display order of its child elements. This is especially true for interactive elements like dropdowns or tooltips. The parent needs a higher 'z-index' than other nearby elements.
By Pawan Nayar · from the LLOS AI Learning record
A parent element must control the display order of its child elements.
This is especially true for interactive elements like dropdowns or tooltips. The parent needs a higher 'z-index' than other nearby elements.
A developer must set the 'position: relative' and a 'z-index' value on the parent element. This 'z-index' value must be higher than any overlapping elements. The child element's 'z-index' alone is not enough. The parent element controls its child's layering.
A designer creates a webpage with a sticky navigation bar and a search box. The search box has an autocomplete dropdown. The developer sets the navigation bar's 'z-index' to 50. The developer sets the search box's parent element 'z-index' to 200. This ensures the autocomplete dropdown always appears above the navigation bar.
More from the same record, pulled by shared topic — not written new for this page.
A developer should not use tooltips that come with a third-party library. These tooltips do not understand fixed layout parts.
The main container uses `scroll-snap-type: x mandatory`. This makes items snap into place horizontally.
The main container for a timeline is the `.timeline` class. This class holds all parts of the timeline.
A developer can set the parent element's CSS `position` to `relative`. This allows child elements with `position: absolute` to move within the parent.
A parent element must control the display order of its child elements. This is especially true for interactive elements like dropdowns or tooltips. The parent needs a higher 'z-index' than other nearby elements.