Option I
<div class="title-box-exit"><button type="button" class="btn-close" data-bs-dismiss="modal"
aria-label="Close"></button></div>
Option II
<div class="title-box-exit"><button type="button" class="tb-btn-back" data-bs-dismiss="modal"
aria-label="Close"></button></div>
Option III - Based on icon fonts
<div class="title-box-exit"><button type="button" class="tb-custom-back" data-bs-dismiss="modal"
aria-label="Close"><i class="fa-solid fa-long-arrow-left"></i></button></div>
Exit button on left:
<div class="title-box-exit">
Exit button on right:
<div class="title-box-exit tb-right">