<div id="div">Button</div>
<script>
  // يمكننا استعمال رايات تنسيقية خاصة مثل الراية “important” 
    div.style.cssText=`color: red !important;
    background-color: yellow;
    width: 100px;
    text-align: center;
  `;
  alert(div.style.cssText);
</script>
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