Using Responsive Grid System. Different files are joined together as one to save some bandwidth. Please copy the code in Notepad++ or any text editor and save it i.e. spartans-grid.css
/* Using Responsive Grid System by Graham Miller with Thanks */

/* SECTIONS ============================================================================= */

.section {
clear: both;
padding: 0px;
margin: 0px;
}

/* GROUPING ============================================================================= */

.row:before,
.row:after {
content:””;
display:table;
}
.row:after {
clear:both;
}
.row {
zoom:1; /* For IE 6/7 (trigger hasLayout) */
}

/* GRID COLUMN SETUP ==================================================================== */

.col {
display: block;
float:left;
margin: 1% 0 1% 1.6%;
}

.col:first-child { margin-left: 0; } /* all browsers except IE6 and lower */

/* REMOVE MARGINS AS ALL GO FULL WIDTH AT 480 PIXELS */

@media only screen and (max-width: 480px) {
.col {
margin: 1% 0 1% 0%;
}
}
/* GRID OF TWO ============================================================================= */

.span-2-of-2 {
width: 100%;
}

.span-1-of-2 {
width: 49.2%;
}

/* GO FULL WIDTH AT LESS THAN 480 PIXELS */

@media only screen and (max-width: 480px) {
.span-2-of-2 {
width: 100%;
}
.span-1-of-2 {
width: 100%;
}
}

/* GRID OF THREE ============================================================================= */

.span-3-of-3 {
width: 100%;
}

.span-2-of-3 {
width: 66.13%;
}

.span-1-of-3 {
width: 32.26%;
}

/* GO FULL WIDTH AT LESS THAN 480 PIXELS */

@media only screen and (max-width: 480px) {
.span-3-of-3 {
width: 100%;
}
.span-2-of-3 {
width: 100%;
}
.span-1-of-3 {
width: 100%;
}
}

/* GRID OF FOUR ============================================================================= */

.span-4-of-4 {
width: 100%;
}

.span-3-of-4 {
width: 74.6%;
}

.span-2-of-4 {
width: 49.2%;
}

.span-1-of-4 {
width: 23.8%;
}

/* GO FULL WIDTH AT LESS THAN 480 PIXELS */

@media only screen and (max-width: 480px) {
.span-4-of-4 {
width: 100%;
}
.span-3-of-4 {
width: 100%;
}
.span-2-of-4 {
width: 100%;
}
.span-1-of-4 {
width: 100%;
}
}

/* GRID OF FIVE ============================================================================= */

.span-5-of-5 {
width: 100%;
}

.span-4-of-5 {
width: 79.68%;
}

.span-3-of-5 {
width: 59.36%;
}

.span-2-of-5 {
width: 39.04%;
}

.span-1-of-5 {
width: 18.72%;
}

/* GO FULL WIDTH AT LESS THAN 480 PIXELS */

@media only screen and (max-width: 480px) {
.span-5-of-5 {
width: 100%;
}
.span-4-of-5 {
width: 100%;
}
.span-3-of-5 {
width: 100%;
}
.span-2-of-5 {
width: 100%;
}
.span-1-of-5 {
width: 100%;
}
}

/* GRID OF SIX ============================================================================= */

.span-6-of-6 {
width: 100%;
}

.span-5-of-6 {
width: 83.06%;
}

.span-4-of-6 {
width: 66.13%;
}

.span-3-of-6 {
width: 49.2%;
}

.span-2-of-6 {
width: 32.26%;
}

.span-1-of-6 {
width: 15.33%;
}

/* GO FULL WIDTH AT LESS THAN 480 PIXELS */

@media only screen and (max-width: 480px) {
.span-6-of-6 {
width: 100%;
}
.span-5-of-6 {
width: 100%;
}
.span-4-of-6 {
width: 100%;
}
.span-3-of-6 {
width: 100%;
}
.span-2-of-6 {
width: 100%;
}
.span-1-of-6 {
width: 100%;
}
}

/* GRID OF SEVEN ============================================================================= */

.span-7-of-7 {
width: 100%;
}

.span-6-of-7 {
width: 85.48%;
}

.span-5-of-7 {
width: 70.97%;
}

.span-4-of-7 {
width: 56.45%;
}

.span-3-of-7 {
width: 41.94%;
}

.span-2-of-7 {
width: 27.42%;
}

.span-1-of-7 {
width: 12.91%;
}

/* GO FULL WIDTH AT LESS THAN 480 PIXELS */

@media only screen and (max-width: 480px) {
.span-7-of-7 {
width: 100%;
}
.span-6-of-7 {
width: 100%;
}
.span-5-of-7 {
width: 100%;
}
.span-4-of-7 {
width: 100%;
}
.span-3-of-7 {
width: 100%;
}
.span-2-of-7 {
width: 100%;
}
.span-1-of-7 {
width: 100%;
}
}

/* GRID OF EIGHT ============================================================================= */

.span-8-of-8 {
width: 100%;
}

.span-7-of-8 {
width: 87.3%;
}

.span-6-of-8 {
width: 74.6%;
}

.span-5-of-8 {
width: 61.9%;
}

.span-4-of-8 {
width: 49.2%;
}

.span-3-of-8 {
width: 36.5%;
}

.span-2-of-8 {
width: 23.8%;
}

.span-1-of-8 {
width: 11.1%;
}

/* GO FULL WIDTH AT LESS THAN 480 PIXELS */

@media only screen and (max-width: 480px) {
.span-8-of-8 {
width: 100%;
}
.span-7-of-8 {
width: 100%;
}
.span-6-of-8 {
width: 100%;
}
.span-5-of-8 {
width: 100%;
}
.span-4-of-8 {
width: 100%;
}
.span-3-of-8 {
width: 100%;
}
.span-2-of-8 {
width: 100%;
}
.span-1-of-8 {
width: 100%;
}
}

/* GRID OF NINE ============================================================================= */

.span-9-of-9 {
width: 100%;
}

.span-8-of-9 {
width: 88.71%;
}

.span-7-of-9 {
width: 77.42%;
}

.span-6-of-9 {
width: 66.13%;
}

.span-5-of-9 {
width: 54.84%;
}

.span-4-of-9 {
width: 43.55%;
}

.span-3-of-9 {
width: 32.26%;
}

.span-2-of-9 {
width: 20.97%;
}

.span-1-of-9 {
width: 9.68%;
}

/* GO FULL WIDTH AT LESS THAN 480 PIXELS */

@media only screen and (max-width: 480px) {
.span-9-of-9 {
width: 100%;
}
.span-8-of-9 {
width: 100%;
}
.span-7-of-9 {
width: 100%;
}
.span-6-of-9 {
width: 100%;
}
.span-5-of-9 {
width: 100%;
}
.span-4-of-9 {
width: 100%;
}
.span-3-of-9 {
width: 100%;
}
.span-2-of-9 {
width: 100%;
}
.span-1-of-9 {
width: 100%;
}
}

/* GRID OF TEN ============================================================================= */

.span-10-of-10 {
width: 100%;
}

.span-9-of-10 {
width: 89.84%;
}

.span-8-of-10 {
width: 79.68%;
}

.span-7-of-10 {
width: 69.52%;
}

.span-6-of-10 {
width: 59.36%;
}

.span-5-of-10 {
width: 49.2%;
}

.span-4-of-10 {
width: 39.04%;
}

.span-3-of-10 {
width: 28.88%;
}

.span-2-of-10 {
width: 18.72%;
}

.span-1-of-10 {
width: 8.56%;
}

/* GO FULL WIDTH AT LESS THAN 480 PIXELS */

@media only screen and (max-width: 480px) {
.span-10-of-10 {
width: 100%;
}
.span-9-of-10 {
width: 100%;
}
.span-8-of-10 {
width: 100%;
}
.span-7-of-10 {
width: 100%;
}
.span-6-of-10 {
width: 100%;
}
.span-5-of-10 {
width: 100%;
}
.span-4-of-10 {
width: 100%;
}
.span-3-of-10 {
width: 100%;
}
.span-2-of-10 {
width: 100%;
}
.span-1-of-10 {
width: 100%;
}
}

/* GRID OF ELEVEN ============================================================================= */

.span-11-of-11 {
width: 100%;
}

.span-10-of-11 {
width: 90.76%;
}

.span-9-of-11 {
width: 81.52%;
}

.span-8-of-11 {
width: 72.29%;
}

.span-7-of-11 {
width: 63.05%;
}

.span-6-of-11 {
width: 53.81%;
}

.span-5-of-11 {
width: 44.58%;
}

.span-4-of-11 {
width: 35.34%;
}

.span-3-of-11 {
width: 26.1%;
}

.span-2-of-11 {
width: 16.87%;
}

.span-1-of-11 {
width: 7.63%;
}

/* GO FULL WIDTH AT LESS THAN 480 PIXELS */

@media only screen and (max-width: 480px) {
.span-11-of-11 {
width: 100%;
}
.span-10-of-11 {
width: 100%;
}
.span-9-of-11 {
width: 100%;
}
.span-8-of-11 {
width: 100%;
}
.span-7-of-11 {
width: 100%;
}
.span-6-of-11 {
width: 100%;
}
.span-5-of-11 {
width: 100%;
}
.span-4-of-11 {
width: 100%;
}
.span-3-of-11 {
width: 100%;
}
.span-2-of-11 {
width: 100%;
}
.span-1-of-11 {
width: 100%;
}
}

/* GRID OF TWELVE ============================================================================= */

.span-12-of-12 {
width: 100%;
}

.span-11-of-12 {
width: 91.53%;
}

.span-10-of-12 {
width: 83.06%;
}

.span-9-of-12 {
width: 74.6%;
}

.span-8-of-12 {
width: 66.13%;
}

.span-7-of-12 {
width: 57.66%;
}

.span-6-of-12 {
width: 49.2%;
}

.span-5-of-12 {
width: 40.73%;
}

.span-4-of-12 {
width: 32.26%;
}

.span-3-of-12 {
width: 23.8%;
}

.span-2-of-12 {
width: 15.33%;
}

.span-1-of-12 {
width: 6.86%;
}

/* GO FULL WIDTH AT LESS THAN 480 PIXELS */

@media only screen and (max-width: 480px) {
.span-12-of-12 {
width: 100%;
}
.span-11-of-12 {
width: 100%;
}
.span-10-of-12 {
width: 100%;
}
.span-9-of-12 {
width: 100%;
}
.span-8-of-12 {
width: 100%;
}
.span-7-of-12 {
width: 100%;
}
.span-6-of-12 {
width: 100%;
}
.span-5-of-12 {
width: 100%;
}
.span-4-of-12 {
width: 100%;
}
.span-3-of-12 {
width: 100%;
}
.span-2-of-12 {
width: 100%;
}
.span-1-of-12 {
width: 100%;
}
}