Mobile issues

@gina-hong:
1. There seems to be an issue with the mobile menu. The issue will be fixed and an update will be released soon. I will let you know when the update is released. Thank you for reporting us the issue.

2. The images in the slider seems to be responsive at my end. Can you attach me a screen shot of how it is showing up in iPhones so that I can look into the issue.

3.The header video not appearing on mobile phones or smaller screen is a default feature of the WordPress. To alleviate concerns about bandwidth, videos are only loaded on the front page for viewports that are at least 900 pixels wide and 500 pixels tall. For more information please check out this link.
To get rid of the image appearing before the header video
Go to => Appearance => Customize => Additional CSS and add the following CSS Code.

@media screen and (min-width:900px) {
	.custom-header {
		background-image:unset !important;
	}
}