I have a CRM (custom php website) and when the viewpoint is changed to that of a mobile, I want to add an overlay div which disables the user from using it (e.g. "Sorry, this crm is only available on iPads or Desktops").
How could I do this? Yes I know its 2018 and websites should be mobile first but a client has specifically asked for this.
You can achieve it with fixed div overlay.
HTML
<body>
...
<div class="mobile-blocker">Sorry, this crm is only available on iPads or Desktops</div>
</body>
CSS
.mobile-blocker {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
z-index: 100001;
background: #000;
color: #fff;
text-align: center;
display: none;
}
@media all and (max-width: 1023px) {
.mobile-blocker {
display: block;
}
}
You can style and customize the content of this block however you want. This is just a basic idea.