If you want to keep the responsive layout so that your site displays properly on mobile devices, but your template doesn't use bootstrap you can also simply include the relevant css to render the layout correctly.
.row-fluid {
width: 100%;
*zoom: 1;
}
.row-fluid:before,
.row-fluid:after {
display: table;
line-height: 0;
content: "";
}
.row-fluid:after {
clear: both;
}
.row-fluid [class*="span"] {
display: block;
float: left;
width: 100%;
min-height: 30px;
margin-left: 2.127659574468085%;
*margin-left: 2.074468085106383%;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}
.row-fluid [class*="span"]:first-child {
margin-left: 0;
}
.row-fluid .controls-row [class*="span"] + [class*="span"] {
margin-left: 2.127659574468085%;
}
.row-fluid .span12 {
width: 100%;
*width: 99.94680851063829%;
}
.row-fluid .span11 {
width: 91.48936170212765%;
*width: 91.43617021276594%;
}
.row-fluid .span10 {
width: 82.97872340425532%;
*width: 82.92553191489361%;
}
.row-fluid .span9 {
width: 74.46808510638297%;
*width: 74.41489361702126%;
}
.row-fluid .span8 {
width: 65.95744680851064%;
*width: 65.90425531914893%;
}
.row-fluid .span7 {
width: 57.44680851063829%;
*width: 57.39361702127659%;
}
.row-fluid .span6 {
width: 48.93617021276595%;
*width: 48.88297872340425%;
}
.row-fluid .span5 {
width: 40.42553191489362%;
*width: 40.37234042553192%;
}
.row-fluid .span4 {
width: 31.914893617021278%;
*width: 31.861702127659576%;
}
.row-fluid .span3 {
width: 23.404255319148934%;
*width: 23.351063829787233%;
}
.row-fluid .span2 {
width: 14.893617021276595%;
*width: 14.840425531914894%;
}
.row-fluid .span1 {
width: 6.382978723404255%;
*width: 6.329787234042553%;
}