style: 全局样式

src/assets/css/style.less

@@ -42,4 +42,33 @@ body,
 
 .flex{
 	display: flex;
+}
+
+.flex-center{
+	justify-content: center;
+	align-items: center;
+}
+
+.flex-1{
+	flex: 1;
+}
+
+.flex-col{
+	flex-direction: column;
+}
+
+.align-center{
+	align-items: center;
+}
+
+.space-between{
+	justify-content: space-between;
+}
+
+.justify-center{
+	justify-content: center;
+}
+
+.relative{
+	position: relative;
 }