fix: A4试卷导出底部被覆盖问题

src/modules/paper-export/assets/styles/paper-temp-preview.scss

@@ -56,6 +56,12 @@
       }
     }
 
+    &-A4 {
+      .page-main-inner {
+        padding: 60px 45px;
+      }
+    }
+
     .page-column-body {
       word-wrap: normal;
       white-space: normal;

src/modules/paper-export/assets/styles/temp.css

@@ -40,6 +40,9 @@
   top: 40px;
   left: auto;
 }
+.paper-page .page-box-A4 .page-main-inner {
+  padding: 60px 45px;
+}
 .paper-page .page-box .page-column-body {
   word-wrap: normal;
   white-space: normal;