Update index.html

index.html

@@ -14,6 +14,8 @@
           display: flex;
           flex-direction: column;
           align-items: center;
+          background-color: #0a0a12;
+          color: #00ffcc;
           font-family: "M PLUS Rounded 1c", monospace;
           padding: 20px;
           margin: 0;
@@ -534,6 +536,7 @@
                 transparent
             );
             opacity: 0.7;
+            z-index: -1;
             animation: waveFlow 4s linear infinite;
         }
         
@@ -567,6 +570,7 @@
                 linear-gradient(rgba(100, 200, 255, 0.1) 1px, transparent 1px),
                 linear-gradient(90deg, rgba(100, 200, 255, 0.1) 1px, transparent 1px);
             background-size: 50px 50px;
+            z-index: -2;
         }
         
         /* 点滅するドットでテクノロジー感を追加 */
@@ -574,6 +578,7 @@
             position: absolute;
             width: 100%;
             height: 100%;
+            z-index: -1;
         }
         
         .tech-dot {