The opacity property sets the opacity level for an element. The opacity level describes the transparency level, where 1 is not transparent at all, .5 is 50% visible, and 0 is completely transparent.
Set the opacity of an element using .opacity-{value} utilities.
100%
75%
50%
25%
0%
<div class="opacity-100">...</div>
<div class="opacity-75">...</div>
<div class="opacity-50">...</div>
<div class="opacity-25">...</div>
<div class="opacity-0">...</div>To fade only a color rather than the whole element, use the .bg-opacity-*, .text-opacity-*, .border-opacity-* and .link-opacity-* utilities on the background, colors, borders and link pages.