.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%}}