8024
.chkptn{ height:300px; padding:10px; background-image: linear-gradient(to top right,#f5f5f5 25%,#dcdcdc00 26% 74%,#dcdcdc90 75%) ,linear-gradient(to top left,#f5f5f5 25%,#dcdcdc00 26% 74%,#dcdcdc90 75%) ; background-size:40px 20px; } 8024・・・何の数字でしょう。国では8020と言ってますが我が家がお世…
