Positioning in relation to a cell in a table

It is important to note that the impact of setting 'position:relative' on table elements such as table-row-group, table-header-group, table-footer-group, table-row, table-column-group, table-column, table-cell, and table-caption is not clearly defined.

Source: http://www.w3.org/TR/CSS21/visuren.html#propdef-position

Is there a strategy for positioning content relative to a table cell when using :before or :after selectors?

.someclass{display: table-cell; position: relative; z-index: auto;} 
/*this may not produce the desired effect*/
htmlcssposition

Answer №1

In my humble opinion: When it comes to browsers that offer support for CSS3, applying position:relative on table elements should function as intended. Currently, this feature is only functional in Firefox.

Citations:

https://www.w3.org/TR/css-position-3/#valdef-position-relative

https://www.w3.org/TR/css-position-3/#property-index

Property name: position Applicable to: all elements except table-column-group and table-column

https://developer.mozilla.org/en-US/docs/Web/CSS/position#relative Regarding 'stacking context,' although not the primary focus here

This declaration (position: relative) establishes a new stacking context when z-index value isn't auto. Its impact on table-*-group, table-row, table-column, table-cell, and table-caption elements remains uncertain.

Queries with Similar Topics:

  1. Overlay on top of tbody
  2. Bug in most browsers?: Ignoring position relative on 'tbody', 'tr' and 'td'?

Answer №2

One clever trick involves using negative margins without any extra elements:

Check out this example on jsfiddle

td span {
    display: block;
    width: 10px;
    height: 10px;
    margin: -5px;
    background: red;
    position: relative;
    top: -5px;
    left: -5px;
}

This method positions the element relative to the cell and adjusts its dimensions with negative margins.

Keep in mind that the positioned element must have fixed dimensions, as percentage-based negative margins won't work.

Another common approach is to add an extra wrapper element inside the cell for properly positioning child elements.

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