.icon-menu {
    display: inline-block;
    width: 24px;
    height: 24px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    /* SVG convertido a data URI */
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://w3.org' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' viewBox='0 0 24 24'%3E%3Cpath d='M4 6h16M4 12h16m-7 6h7'/%3E%3C/svg%3E");
}