Like above I want apply that background: red; for example to update filter: opacity(50%); on ul with hover when hover on icons that way remove opacity from ul? Above example just change background to red but there still an filter: opacity(100%); that why not update ul filter opacity? set before? So i want to be red on hover and also filter: opacity(100%).
As you see is stay filter: opacity(50%); with hover from .div_plus_social:hover>ul. The red background is fine but filter: opacity(100%); is not apply from .div_plus_social > ul > li > a:hover