How to create subforums in 2 collumns

[Krzysztof Waletzke]

Welcome all members of InvisionPower.com
I have a problem with creating CSS (subforums in two-collumns.

This is CSS:

.ipsSubNavigation .ipsList_inline:after, 
.ipsBreadcrumb ul:after, ul[role=tablist]:after, 
#ipsLayout_footer 
.ipsLayout_container:after, 


}
.ipsDataItem_subList li a:after{content:'';}
.ipsDataItem_subList li{
float:left;
width:calc(100% / 2 - 5px);
}
.ipsDataItem_subList li a:before {   
content:"\f067";
font-family:"FontAwesome";
font-size: 10px;  
font-weight: normal;  
display: inline-block;  
margin-right: 5px;  
-webkit-font-smoothing:antialiased;  
-moz-osx-font-smoothing:grayscale;  
-webkit-transform:translate(0,0);  
-moz-transform:translate(0,0);  
-ms-transform:translate(0,0);  
-o-transform:translate(0,0);  
transform:translate(0,0);}

And broken description on category