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

.container {
 width: 960px;
 margin: 0 auto;
 padding: 0px;
 position: relative;
}

.container:after, .container:before {
 content: " ";
 display: table;
}

.container:after {
 clear: both;
}

.grid-1, .grid-2, .grid-3, .grid-4, .grid-5, .grid-6, .grid-7, .grid-8, .grid-9, .grid-10, .grid-11, .grid-12, .grid-13, .grid-14, .grid-15, .grid-16, .grid-1-3 {
 float: left;
 margin-left: 10px;
 margin-right: 10px;
}

.grid-1  {width: 40px;}
.grid-2  {width: 100px;}
.grid-3  {width: 160px;}
.grid-4  {width: 220px;}
.grid-5  {width: 280px;}
.grid-6  {width: 340px;}
.grid-7  {width: 400px;}
.grid-8  {width: 460px;}
.grid-9  {width: 520px;}
.grid-10  {width: 580px;}
.grid-11  {width: 640px;}
.grid-12  {width: 700px;}
.grid-13  {width: 760px;}
.grid-14  {width: 820px;}
.grid-15  {width: 880px;}
.grid-16  {width: 940px;}
.grid-1-3 {width: 300px;}

@media only screen and (min-width: 788px) and (max-width: 979px) {
 .container {
 width: 768px;
}

.grid-1  {width: 28px;}
.grid-2  {width: 76px;}
.grid-3  {width: 124px;}
.grid-4  {width: 172px;}
.grid-5  {width: 220px;}
.grid-6  {width: 268px;}
.grid-7  {width: 316px;}
.grid-8  {width: 364px;}
.grid-9  {width: 412px;}
.grid-10 {width: 460px;}
.grid-11 {width: 508px;}
.grid-12 {width: 556px;}
.grid-13 {width: 604px;}
.grid-14 {width: 652px;}
.grid-15 {width: 700px;}
.grid-16 {width: 748px;}
.grid-1-3 {width: 236px;}

}

@media only screen and (max-width: 787px) {

 .container {
  width: 300px;
 }

 .grid-1, .grid-2, .grid-3, .grid-4, .grid-5, .grid-6, .grid-7, .grid-8, .grid-9, .grid-10, .grid-11, .grid-12, .grid-13, .grid-14, .grid-15, .grid-16, .grid-1-3 {
 width: 300px;
 margin: 0 0 20px 0;
 float: none;
 }

}