.iui-contextmenu
{
    background-color: #fefefe;
	border: solid thin #dedede;
}
.iui-contextmenu .iui-menuitem-block
{
	background: #f5f5f5;
	border: solid thin #dedede;
}
.iui-contextmenu .iui-menuitem-root
{
	border-color: transparent;
	color: black;
}
.iui-contextmenu .iui-menuitem-root-hovered, .iui-contextmenu .iui-menuitem-root-selected
{
	background-color: transparent !important;
	border: solid thin transparent !important;
	color: black;

    animation-name: iui-menuitem-hovered-animate-enter;
    animation-delay: 0s;
    animation-direction: normal;
    animation-duration: 0.15s;
    animation-fill-mode: forwards;
    animation-iteration-count: 1;
    animation-play-state: running;
    animation-timing-function: linear; 
}
@keyframes iui-menuitem-hovered-animate-enter {
    0% { background: transparent; border-color: transparent; }
    100% { background: #d9edfd; border-color: #d9edfd; }
}