style.css

*,
*:before,
*:after {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box; }

/*Container for page */ 
.container {
  font-size: 12px;
  max-width: 80em;
  margin: 0 auto;  /* centre */ 
}

/* row */
.row {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  margin-top: 0;
  margin-bottom: 0;
  max-width: 70em;
  *zoom: 1; }
  .row:before, .row:after {
    content: " ";
    display: table; }
  .row:after {
    clear: both; }
  .row.collapse > .column,
  .row.collapse > .columns {
    padding-left: 0;
    padding-right: 0; }
  .row.collapse .row {
    margin-left: 0;
    margin-right: 0; }
  .row .row {
    width: auto;
    margin-left: -0.9375rem;
    margin-right: -0.9375rem;
    margin-top: 0;
    margin-bottom: 0;
    max-width: none;
    *zoom: 1; }
    .row .row:before, .row .row:after {
      content: " ";
      display: table; }
    .row .row:after {
      clear: both; }
    .row .row.collapse {
      width: auto;
      margin: 0;
      max-width: none;
      *zoom: 1; }
      .row .row.collapse:before, .row .row.collapse:after {
        content: " ";
        display: table; }
      .row .row.collapse:after {
        clear: both; }

.row .column:first-child {
  margin-left:0; 
}
      
/* normal columns */ 
.column {
  width: 100%;
  position: relative; 
  margin-left: 2%;
  float: left;
  padding: 0 1%; 
  overflow: hidden; 
}

.one {
  width: 6.5%;
}

.two
{
  width: 15%;
}

.three {
  width: 23.5%;  
}

.four {
  width: 32%;
}

.five{
  width: 40.5%;
}

.six {
  width: 49%;
}

.seven {
  width: 57.5%;  
}

.eight{
  width: 66%;
}

.nine {
  width: 74.5%;  
}

.ten {
  width: 83%;
} 

.eleven {
  width: 91.5%;
}

/* push-right columns - change to pre gutters + pull */
.push-one{
  left: 8.33333333%;
  right: auto;
}

.push-two {
  left: 16.66666667%;
  right: auto;
}

.push-three {
  left: 25%;
  right: auto;
}

.push-four {
  left: 33.33333333%;
  right: auto;
}

.push-five {
  left: 41.66666667%;
  right: auto;
}

.push-six {
  left: 50%;
  right: auto;
}

.push-seven {
  left: 58.33333333%;
  right: auto;
}

.push-eight {
  left: 66.66666667%;
  right: auto;
}

.push-nine {
  left: 75%;
  right: auto;
}

.push-ten {
  left: 83.33333333%;
  right: auto;
}

.push-eleven {
  left: 91.66666667%;
  right: auto;
}

/*pull-left columns */
.pull-one {
  right: 8.33333333%;
  left: auto;
}

.pull-two {
  right: 16.66666667%;
  left: auto;
}

.pull-three {
  right: 25%;
  left: auto;
}

.pull-four {
  right: 33.33333333%;
  left: auto;
}

.pull-five {
  right: 41.66666667%;
  left: auto;
}

.pull-six {
  right: 50%;
  left: auto;
}

.pull-seven {
  right: 58.33333333%;
  left: auto;
}

.pull-eight {
  right: 66.66666667%;
  left: auto;
}

.pull-nine {
  right: 75%;
  left: auto;
}

.pull-ten {
  right: 83.33333333%;
  left: auto;
}

.pull-eleven {
  right: 91.66666667%;
  left: auto;
}

/* Change order of content */
.right {
  float: right;
}

.left {
  float: left; 
}

/* visibility */

.hide {
  display: none; 
}

/* clearfix */ 
.clearfix {  
  *zoom: 1;  
}

.clearfix:before. clearfix:after {
  content: " "; 
  display: table;
}

.clearfix:after {
  clear: both;
}

/* Responsive Grid Media Queries */ 

/* mobile - below 480px */
@media (max-width: 480px) {
  .column, .one, .two, .three, .four, .five, .six, .seven, .eight, .nine, .ten, .eleven {
    width: 100%;   
    height: auto; 
    margin-bottom: 2%
  }
  
}

/* styles */

#wrapper {
  background-color: grey; 
  height: auto; 
  padding: 20px; 
}

.row-style {
  background-color: whitesmoke; 
  height: auto; 
  padding: 10px; 
  margin-bottom: 10px;
} 

.column {
  background-color: lightgrey; 
  height: auto;
  padding: 10px;
  min-height: 60px;
}