How to make a border-bottom for the entire length of the page?

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The container width is 1170px and I want to make it the full width of the page,but it's not coming and because he is a child element.What to do?
July 4th 19 at 23:48
2 answers
July 4th 19 at 23:50
do on the break block with border-bottom, and then put it before and after with the same border and width just as much as you miss that it was full width
Could you write that in code example? - Fiona22 commented on July 4th 19 at 23:53
July 4th 19 at 23:52
I'm not an expert, but try to make the line the full width and positions as absolute, respectively to the parent property relative

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