Ghost/ghost/admin/app/styles/addons/gh-koenig/koenig-menu.css

.koenig-menu {
    border:1px solid var(--darkgrey);
    position:absolute;
    background-color: #fff;
    background-clip: padding-box;
    padding:10px;
    box-shadow: rbga(0,0,0,0.10) 0 2px 6px;
    min-width:300px;
    border-radius: 4px;
    display: none;
}
.koenig-menu.is-visible {
    animation: koenig-menu-fadein 111ms;
}
.koenig-menu ul {
    margin:0;
    padding:0;
    list-style: none;
}
.koenig-menu ul li button {
    padding:5px;
    width:100%;
    text-align: left;
    font-size:1.3rem;
    border-radius: 4px;
}

.koenig-menu ul li button img {
    width:14px;
}

.koenig-menu ul li button:hover, .koenig-menu ul li button.selected {
    background-color: var(--darkgrey);

}


#koenig-menu-button {
    position: absolute;
    display:none;
    width:100px;
    height: 100px;
    background-color: deeppink;
}

@keyframes koenig-menu-fadein {
    from {
        opacity: 0;
        transform: scale(0.7);
        transform-origin:top;
    }
    to   {
        opacity: 1;
        transform: scale(1);
        transform-origin:top;
    }
}