Why is width: 100% not working on div {display: table-cell}?

Question

I\'m trying to vertically and horizontally center some content overlaying an image slide (flexslider). There were some similar questions to this one, but I couldn\'t find a

Answer 1

I discovered that the higher the value of 'width' is, the smaller the box width is made and vice versa. I found this out because I had the same problem earlier. So:

.inner-wrapper {
    width: 1%;
}

solves the problem.