style：starttest页面媒体查询middle伸缩

src/views/starttest/StartTest.vue

@@ -180,6 +180,31 @@ export default {
           margin-left: 28px;
         }
       }
+      @media screen and (max-width: 1400px) {
+        .line {
+          width: 800px;
+        }
+      }
+      @media screen and (max-width: 1300px) {
+        .line {
+          width: 720px;
+        }
+      }
+      @media screen and (max-width: 1200px) {
+        .line {
+          width: 620px;
+        }
+      }
+      @media screen and (max-width: 1100px) {
+        .line {
+          width: 540px;
+        }
+      }
+      @media screen and (max-width: 1000px) {
+        .line {
+          width: 500px;
+        }
+      }
       .topic {
         font-size: 16px;
         font-weight: 500;
@@ -250,6 +275,7 @@ export default {
         transform: translate(-50%, 0);
       }
     }
+
     .time {
       width: 130px;
       height: 110px;