#digraphs .u-prop.ex {color: #D88; color: rgba(221, 0, 0, .5)} /* unofficial proposal */
.Lm, .Mc, .Me, .Zl, .Zp {background: #F00} /* unstyled */
-.X > span {background: #888} /* invisible contents */
+.X > span {background: #898; background: rgba(0, 0, 0, .25)} /* invisible contents */
/* letter scripts */
.Armenian,