css - Use 3 pseudo elements together? -

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i want ask if possible use pseudo elements :hover, :not(), , :after on same css rule

i need use 3 piece of code:

#sidebar ul:not(.sub-menu) li:hover:after{     content: "";     width:100%;     height:50px;     position:absolute;     top:0;     left:0;     z-index:100;     background: rgba(0,0,0,0.4); }

since have sidebar using pseudo elements cause hover effect on menu items, want avoid main menu <li>s in hover state when sub menu <li> hovered.

you can select easy way like:

#sidebar ul li { // styles main li }

then sub <li> of them :

#sidebar ul li > ul li { // styles sub menu li }

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