@media screen and (max-width:450px){
ul.archive-col-list li{width:100%;height:280px;margin-bottom:10%}
}
@media screen and (max-width:479px) and (min-width:451px){
ul.archive-col-list li{width:100%;height:280px}
}
@media screen and (max-width:599px) and (min-width:480px){
ul.archive-col-list li{width:100%;height:279px}
}