add

public/static/compress/compress.css

@@ -219,22 +219,22 @@
 }
 
 .section_2 ul li:nth-child(1) a {
-    background: url("./compress/bg_middle_question1.png") top center no-repeat;
+    background: url("./bg_middle_question1.png") top center no-repeat;
     background-size: 275px 206px;
 }
 
 .section_2 ul li:nth-child(2) a {
-    background: url("./compress/bg_middle_question2.png") top center no-repeat;
+    background: url("./bg_middle_question2.png") top center no-repeat;
     background-size: 275px 206px;
 }
 
 .section_2 ul li:nth-child(3) a {
-    background: url("./compress/bg_middle_question3.png") top center no-repeat;
+    background: url("./bg_middle_question3.png") top center no-repeat;
     background-size: 275px 206px;
 }
 
 .section_2 ul li:nth-child(4) a {
-    background: url("./compress/bg_middle_question4.png") top center no-repeat;
+    background: url("./bg_middle_question4.png") top center no-repeat;
     background-size: 275px 206px;
 }