When working with CSS, the code snippet
#main #display img { height: 80px }display that is nested inside another element with the id main. However, there may be some confusion around whether this syntax is logical or valid since ids are typically considered to be globally unique identifiers.
A solution to this nesting dilemma can be found in SASS, where code can be organized hierarchically like so:
#main {
width: 700px;
#display {
img {
height: 80px;
}
}
This structure represents an "id within an id" relationship, which might make more sense conceptually for certain design scenarios.
An update: It's recommended to avoid situations where multiple elements share the same id value, as demonstrated here:
#main #display img { height: 80px; }
#sidebar #display img { height: 80px; }
In such cases, a better approach would be to simplify the selector by targeting the nested element directly:
#display img { height: 80px; }