.my-contextmenu {
    display: none;
    position: fixed;
    width: 200px;
    background-color: #fff;
    border: 1px solid #ccc;
    box-shadow: 1px 1px 1px rgba(0,0,0,.2);
    z-index: 1000;
}
.my-contextmenu.show {
    display: block;
}
.my-contextmenu ul {
    list-style: none;
    padding: 10px 0;
}
.my-contextmenu ul li {
    padding: 4px 10px;
    font-size: 14px;
    color: #333;
}