@import url("grid-board-step4.css?v=2.3") all;
@import url("grid-board-step3.css?v=1.5") all and (max-width:1024px);
@import url("grid-board-step2.css?v=1.2") all and (max-width:768px);
@import url("grid-board-step1.css?v=1.5") all and (max-width:540px);