<style>
button {
background: none!important;
border: none;
padding: 0!important;
/*optional*/
font-family: arial, sans-serif;
/*input has OS specific font-family*/
color: #069;
text-decoration: underline;
cursor: pointer;
}
</style
<button> your button that looks like a link</button>
<button data-elfsight-show-form="Widget-ID"> your button that looks like a link</button>
<script src="https://apps.elfsight.com/p/platform.js" defer></script>
<div class="elfsight-app-Widget-ID"> </div>