style: 调整卡片样式，移除底部内边距

src/app.css

@@ -338,6 +338,7 @@ body.single-col .post-list {
 
 @media screen and (min-width: 767px) {
 	.card {
+		padding-bottom: 0;
 		border: 2px solid var(--text-color);
 		border-bottom: 2px solid var(--text-color);
 		transition: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94) border-color;