brightness
0
1
2
3
4
5
<-- add a brightness class to body tag-->
+ <body class="filter">
<div>
<div class="v-brightness-0">
</div>
<div class="v-brightness-1">
</div>
<div class="v-brightness-2">
</div>
<div class="v-brightness-3">
</div>
<div class="v-brightness-4">
</div>
<div class="v-brightness-full">
</div>
</div>
filter-brightness version