添加背景

src/pages/Projects/index.less

@@ -1,8 +1,8 @@
 .main {
   width: 100%;
   height: 100vh;
-  // background: url('@/assets/projects/bg.png') no-repeat center;
-  // background-size: 100% 100%;
+  background: url('@/assets/projects/bg.png') no-repeat center;
+  background-size: 100% 100%;
   .titleCon {
     margin: 0 1.8rem;
     padding: 2.64rem 0 0.4rem;