remove invisible templates

nicegui/elements/colors.js

@@ -1,5 +1,4 @@
 export default {
-  template: '<span style="display:none"></span>',
   mounted() {
     for (let name in this.$props) {
       document.body.style.setProperty("--q-" + name, this.$props[name]);

nicegui/elements/keyboard.js

@@ -1,5 +1,4 @@
 export default {
-  template: "<span></span>",
   mounted() {
     for (const event of this.events) {
       document.addEventListener(event, (evt) => {

nicegui/elements/keyboard.py

@@ -26,7 +26,6 @@ class Keyboard(Element):
         self.active = active
         self._props['events'] = ['keydown', 'keyup']
         self._props['repeating'] = repeating
-        self.style('display: none')
         self.on('key', self.handle_key)
 
     def handle_key(self, msg: Dict) -> None: