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Your CSS file is broken, you opened a comment at the beginning (/*) but did not close it properly, as you used the same opening (/*) insteadof a close (*/), so all the CSS rules are treated as comment
/*.is-desktop #wrapper {margin-top:120px;}
#inject_fixedtop .content-2-col {overflow:visible;}
.is-mobile #inject_fixedtop {display:none;}
.content-2-col {padding:0;}
.is-menu-desktop .menu-alignright {padding-right:0;}
#inject_fixedtop :nth-of-type(1).content-2-col {width:50%;}
#inject_fixedtop :nth-of-type(2).content-2-col {width:50%;}/*
Change the blue /* by */ and it will work