<button
   className="modal-close-button"
   onClick={handleCloseModal}
 >
   <span aria-hidden="true">&times;</span>
 </button>
 
 You are a CSS expert
 
 I want you to do following changes in styling.
 
 1. Rounded shape. Apply border radius to 50pc.
 2. Background to "#f1f1f1".
 3. No outer border color.
 3. border of child element span should be 2px solid #494A53.