[ui] .button is a global style

webui/src/App.svelte

@@ -78,4 +78,24 @@
   .spinner {
     font-size: 2em;
   }
+
+  .button {
+    border: 1px solid var(--foreground);
+    border-radius: 4px;
+
+    background: var(--background-lighter);
+    color: var(--foreground);
+
+    padding: 0.25em 1em;
+    line-height: 1;
+
+    display: block;
+    text-align: center;
+
+    cursor: pointer;
+
+    input {
+      display: none;
+    }
+  }
 </style>

webui/src/components/layout/Header.svelte

@@ -108,20 +108,5 @@
     .input {
       flex-grow: 1;
     }
-
-    .button {
-      border: 1px solid var(--foreground);
-      border-radius: 4px;
-      background: var(--background-lighter);
-      color: var(--foreground);
-      padding: 0.25em 1em;
-      line-height: 1;
-      display: block;
-      cursor: pointer;
-
-      input {
-        display: none;
-      }
-    }
   }
 </style>