update index.js

Strides-APP/index.js

@@ -63,7 +63,7 @@ class Index extends Component {
           }
           <ModalPortal/>
           { this.state.navBottom != undefined
-          ? <View style={{height: this.state.navBottom, backgroundColor: colorAccent}}></View>
+          ? <View style={{height: isIOS ? 0 : this.state.navBottom, backgroundColor: colorAccent}}></View>
           : <SafeAreaInsetsContext.Consumer>
               {insets => this.init(insets)}
             </SafeAreaInsetsContext.Consumer>