PDF导出样式的问题

src/views/learning/item-crowd-analysis.vue

@@ -389,15 +389,15 @@ export default {
 </script>
 <style lang="scss">
 .crowd-analysis-wrap {
-  // background: #fff;
+  background: #F0F2F5;
   overflow: hidden;
   // padding: 10px;
   overflow-x: auto;
   .change-radio {
     position: relative;
     top: 5px;
-    left: 50%;
-    margin-left: -60px;
+    left: 100%;
+    margin-left: -135px;
     width:120px;
     height:34px;
     background:rgba(68,146,132,1);

src/views/learning/item-list.vue

@@ -856,18 +856,19 @@ export default {
       if(element == null) {
         return
       }
-      // let opts = {
+      let opts = {
         // scale:window.devicePixelRatio, // 添加的scale 参数
         // logging: true, //日志开关
         // width:element.offsetWidth, //dom 原始宽度
         // height:element.offsetHeight, //dom 原始高度
         // useCORS: true,
         // taintTest: true, //是否在渲染前测试图片
-      //   dpi:300
-      // };
+        // dpi:300,
+        background: '#F0F2F5',
+      };
       vm.showRadio = 1;
       setTimeout(() => {
-        html2Canvas(element).then(function(canvas) {
+        html2Canvas(element,opts).then(function(canvas) {
           let contentWidth = canvas.width;
           let contentHeight = canvas.height;