fix(notification): Improve notification icon and window

avant	après

.notifications-icon .notifications-unseen:before {
       display: block;
       content: "";
       background: var(--red);
       inset: -10px;
       position: absolute;
       z-index: -1;
       border-radius: 99px;
       opacity: 0.25;
       &:hover {
               opacity: 0.1;
       }
}

Ou alors style N° 2 ?