.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%;}@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%;}}