In bootstrap-3, the "Class Prefix" is as follows:
.col-xs - Additional Small Devices - Phones (<768px)
.col-sm - Small devices - Tablets (≥768px)
.col-md - Medium Devices - Desktop Computers (≥992px)
.col-lg - Large Devices Desktop Computers (≥1200px)
In your coding (you ask for the desktop version, I think so ...) you need to remove class="col-sm-8 col-xs-8" and add class="col-md-8 col-lg-8"
the above code results are divided into each other, and not reduced as necessary.
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