Update index.html

index.html

@@ -512,19 +512,17 @@
     html, body {
         margin: 0;
         padding: 0;
-        height: 100%;
         background-color: #0a192f;
-        overflow: hidden;
     }
             @keyframes blink {
             0% { opacity: 0.2; }
             100% { opacity: 0.8; }
         }
     .wave-container {
-        position: relative;
+        position: fixed;
         width: 100%;
         height: 100%;
-        min-height: 100vh;
+        z-index: -1;
     }
     
     /* グリッド線を最背面に */