Added sidebar toggle

src/App.vue

@@ -1,6 +1,19 @@
 <template>
   <div id="app">
-    <panelLeft/>
+    <div v-bind:class="responsiveToggleButton" id="overlay-toggle">
+      <a href="" class="uk-icon-button" uk-icon="menu" uk-toggle="target: .toggle-hidden; animation: uk-animation-slide-left-small, uk-animation-slide-left-small" ></a>
+    </div>
+    <div uk-grid class="uk-height-1-1" margin=0>
+      <div v-bind:class="responsivePanelLeft" class="toggle-hidden uk-card uk-card-default uk-card-body uk-padding-remove-top uk-padding-remove-right uk-width-auto uk-height-1-1">
+        <div class="uk-card-header">
+            <h3 class="uk-card-title"><b>OpenFlexure</b> Microscope</h3>
+        </div>
+        <panelLeft/>
+      </div>
+      <div class="uk-width-expand">
+        <div class="uk-card uk-card-default uk-card-body uk-height-1-1">Width: {{ window.width }}</div>
+      </div>
+    </div>
   </div>
 </template>
 
@@ -19,9 +32,51 @@ import panelLeft from './components/panelLeft.vue'
 // Export main app
 export default {
   name: 'app',
+
   components: {
     panelLeft
+  },
+
+  data: function () {
+    return {
+      window: {
+        width: 0,
+        height: 0
+      }
+    }  
+  },
+
+  created: function () {
+    window.addEventListener('resize', this.handleResize)
+    this.handleResize();
+  },
+
+  beforeDestroy: function () {
+    window.removeEventListener('resize', this.handleResize)
+  },
+
+  methods: {
+    handleResize: function(event) {
+      this.window.width = window.innerWidth;
+      this.window.height = window.innerHeight;
+    }
+  },
+
+  computed: {
+    // Stylises the hostname input box based on connection status
+    responsivePanelLeft: function () {
+      return {
+        //'uk-hidden': this.window.width<850,
+        'overlay-panel': this.window.width<850
+      }
+    },
+    responsiveToggleButton: function () {
+      return {
+        //'uk-hidden': this.window.width>=850,
+      }
+    }
   }
+
 }
 </script>
 
@@ -42,4 +97,18 @@ body, html {
   height: 100%
 }
 
+.overlay-panel {
+  position: fixed;
+  z-index: 99;
+}
+
+#overlay-toggle {
+  width: 30px;
+  height: 30px;
+  position: fixed;
+  right: 0;
+  margin: 20px;
+  z-index: 999
+}
+
 </style>