.one_half,
.one_third,
.two_third,
.one_fourth,
.three_fourth,
.one_fifth,
.two_fifth,
.three_fifth,
.four_fifth,
.one_sixth{float:left;}.clear_column{clear:both;display:block;font-size:0;height:0;line-height:0;width:100%;overflow:hidden;}.one_half{width:50%;}.one_third{width:33.3%;}.two_third{width:66.6%;}.one_fourth{width:25%;}.three_fourth{width:75%;}.one_fifth{width:20%;}.two_fifth{width:40%;}.three_fifth{width:60%;}.four_fifth{width:80%;}.one_sixth{width:16.6%;}