E\xcept pc image preload

components/pcIndex.vue

@@ -9,7 +9,7 @@
           </div>
           <div class="title_img"></div>
         </div>
-        <img class="mian_img" src="../assets/images/web-main-img.png.webp" />
+        <div class="mian_img"></div>
       </div>
     </div>
   </div>
@@ -86,11 +86,13 @@ body {
   background-size: 100% 100%;
 }
 .mian_img {
-  height: calc(100% - 390px);
-  width: auto;
+  height: 364px;
+  width: 799px;
   position: absolute;
   bottom: 0;
   left: 50%;
   transform: translateX(-50%);
+  background: url(../assets/images/web-main-img.png.webp);
+  background-size: 100% 100%;
 }
 </style>