วิธีการใส่ข้อความไปในช่องข้อความที่มี placeholder โดย
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placeholder When a placeholder task includes only a duration, the Gantt Chart view shows a lighter-colored placeholder Gantt bar drawn from the start date of the task's
The ::placeholder pseudo element allows you to style the placeholder Answer Placeholder text must meet a color contrast requirement of at least :1 contrast ratio, or 3:1 contrast ratio if its large (larger than 18pt or 14pt +
ปริมาณ:
placeholder When a placeholder task includes only a duration, the Gantt Chart view shows a lighter-colored placeholder Gantt bar drawn from the start date of the task's
placeholder The ::placeholder pseudo element allows you to style the
Answer Placeholder text must meet a color contrast requirement of at least :1 contrast ratio, or 3:1 contrast ratio if its large (larger than 18pt or 14pt +