Footer showing above content

I purchased a Gillion WordPress theme and the footer is appearing above the content. I've followed the general advice of explicitly setting the bottom, width and height, but to no avail.

.sh-footer-columns {
    position:absolute;
    bottom:0px;
    left:0px;
    right:0px;
    width:100%;
    height:70%;
}

Any help would be much appreciated.

Thank you!

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