You can group cells of your grid together into an <dfn>area</dfn> and give the area a custom name. Do this by using <code>grid-template-areas</code> on the container like this:
The code above merges the top three cells together into an area named <code>header</code>, the bottom three cells into a <code>footer</code> area, and it makes two areas in the middle row; <code>advert</code> and <code>content</code>.
<strong>Note</strong><br>Every word in the code represents a cell and every pair of quotation marks represent a row.
In addition to custom labels, you can use a period (<code>.</code>) to designate an empty cell in the grid.
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## Instructions
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Place the area template so that the cell labeled <code>advert</code> becomes an empty cell.
- text: <code>container</code> class should have a <code>grid-template-areas</code> property similar to the preview but has <code>.</code> instead of the <code>advert</code> area.
testString: assert(code.match(/.container\s*?{[\s\S]*grid-template-areas\s*?:\s*?"\s*?header\s*?header\s*?header\s*?"\s*?"\s*?.\s*?content\s*?content\s*?"\s*?"\s*?footer\s*?footer\s*?footer\s*?"\s*?;[\s\S]*}/gi), '<code>container</code> class should have a <code>grid-template-areas</code> propertiy similar to the preview but has <code>.</code> instead of the <code>advert</code> area.');