@import url('default.css');
#contents {
    width: calc(100% - 270px) !important;
    width: -o-calc(100% - 270px) !important;
    width: -moz-calc(100% - 270px) !important;
    width: -ms-calc(100% - 270px) !important;
    width: -webkit-calc(100% - 270px) !important;
}