Pixellated default icons on chat popup on demo site

[samtuke]

trafficstars

On the demo site (https://livehelperchat.com/order/now) the chat popup uses icon images which are pixellated. 'Minimize', 'Open in new window', and 'Close' are all blurry on my 4k screen. Consider using higher-resolution icons, or switching to the use of e.g. font-awesome icons which scale well.