.one,  .one_half,  .one_third,  .two_third,  .three_fourth, 
.one_fourth{
    margin-right: 4%;
    float: left;
    position: relative;
    padding-top: 25px;
    margin-bottom: 25px;
}
.last{
    margin-right: 0 !important;
    clear: right;
}
.one{
    float: none;
    display: block;
    clear: both;
    margin-right: 0;
}
.one_half{
    width: 48%;
}
.one_third{
    width: 30.6%;
}
.two_third{
    width: 65.1332%;
}
.one_fourth{
    width: 21.8%;
}
.three_fourth{
    width: 73.8%;
}

.one img, .one_half img, .one_third img, .two_third img, .three_fourth img, 
.one_fourth img{
	width: auto;
	height: auto;
	max-width: 100%;
	max-height: 100%;
}