.astra-icon-down_arrow::after {
    content: "";
    display: inline-block;
    width: 10px;
    height: 10px;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M7 10l5 5 5-5z" fill="currentColor"/></svg>');
    background-repeat: no-repeat;
    background-position: center;
}