fix

style/style_fun.css

@@ -1,34 +1,20 @@
 * {
   box-sizing: content-box;
 }
-
+main {
+  background-color: black;
+}
 @keyframes defilement {
   0% {
-    top: 0;
+    top: -1000px;
     transform: rotateX(15deg) translateZ(2200px);
   }
   100% {
-    top: -10000px;
+    top: 0px;
     transform: rotateX(20deg) translateZ(-2200px);
   }
 }
-@keyframes rainbow {
-  0% {
-    color: yellow;
-  }
-  25% {
-    color: yellowgreen;
-  }
-  50% {
-    color: red;
-  }
-  75% {
-    color: blue;
-  }
-  100% {
-    color: yellow;
-  }
-}
+
 .main-contents {
   z-index: 9999;
 }