JSFiddle - React, Tailwind, and code Playground

HTML

<header class="entry-header ">
    <h1 class="entry-title ">
        "Create Course"
        ::after
    </h1>
</header

CSS

.entry-header .entry-title {
    visibility: hidden;
}
.entry-header .entry-title::after {
    content: "Create Theme" !important;
    visibility: visible;
}