How to adding a text block for headline at top of Index page

Add this code into Design > Custom CSS

body.homepage .main-content:before {
    content: "Shane Harris";
    display: block;
    text-align: center;
    font-size: 30px;
    font-family: aktiv-grotesk;
    font-weight: 500;
    font-style: normal;
    font-size: 20px;
    letter-spacing: .02em;
    text-transform: none;
    line-height: 1em;
    margin-bottom: 30px;
}