去除彩虹

src/index.css

@@ -10,47 +10,6 @@ body {
   -moz-osx-font-smoothing: grayscale;
 }
 
-@media screen and (-webkit-min-device-pixel-ratio: 0) {
-  body:before {
-    right: 0;
-    top: 0;
-    left: 0;
-    height: 100px;
-    z-index: 2147483647;
-    position: fixed;
-    content: "";
-    display: block;
-    -webkit-transform: translateY(-99.99px);
-    background: linear-gradient(124deg,
-    #FF0000,
-    #FF7F00,
-    #FFFF00,
-    #7FFF00,
-    #00FF00,
-    #00FF7F,
-    #00FFFF,
-    #007FFF,
-    #0000FF,
-    #7F00FF,
-    #FF00FF,
-    #FF007F,
-    #FF0000);
-    animation: rainbow 15s ease infinite;
-    background-size: 1000% 1000%;
-  }
-}
-@keyframes rainbow {
-  0% {
-    background-position: 0% 80%;
-  }
-  50% {
-    background-position: 100% 20%;
-  }
-  100% {
-    background-position: 0% 80%;
-  }
-}
-
 code {
   font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
     monospace;