Using Ionic components.

src/theme/map.css

@@ -6,3 +6,9 @@
   height: 256px;
   width: 256px;
 }
+
+ion-button.get-location {
+  --opacity: 0.6;
+  --ion-background-color: white;
+  margin-left: calc(50% - 20px);
+}

src/theme/slippy.css

@@ -1,5 +1,5 @@
 .slippy {
-  position: relative;
+  position: fixed;
   width: 100%;
   height: 100%;
   z-index: 10;

src/theme/variables.css

@@ -1,8 +1,15 @@
 /* Ionic Variables and Theming. For more info, please see:
 http://ionicframework.com/docs/theming/ */
 
+#background-content {
+  background: transparent;
+}
+
 /** Ionic CSS Variables **/
 :root {
+  --ion-background-color: transparent;
+
+
   /** primary **/
   --ion-color-primary: #3880ff;
   --ion-color-primary-rgb: 56, 128, 255;