css - Loading mask, that disables underlying html elements -


i want create loader mask page. need elements under mask not available. can click buttons. can see on image.

here css of mask:

div#mask { z-index:9999; display: none; width:100%; background-color: rgba(0,0,0,0.15); }

it's div 100% width, , height of window. how fix ui block?

enter image description here

you haven't given this:

position: absolute;

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