syncsarl Hi
Add this code in custom css and change the font size and color as per needs
This is style code used for this
.item-page .com-content-article__body>p:first-child::first-letter, .item-page .com-content-article__body p.has-letter::first-letter {
color: var(--color-primary);
float: left;
font-family: var(--heading-font-family);
font-size: 96px;
font-weight: 400;
line-height: .7;
margin-right: 16px;
padding-top: 16px;
}