body, #tinymce {
    font-family: tahoma, sans-serif;
    font-size: 13px;
    direction: rtl;
}

p {
    margin-top: 13px;
    margin-bottom: 13px;
}

h1, h2, h3, h4, h5, h6 {
    margin-top: 15px;
    margin-bottom: 15px;
}