<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.0/jquery.min.js"></script>
<script>
  $(document).ready(function(){
    $('<a class="btn btn--border theme-btn--primary-inverse sqs-button-element--primary second-button" href="https://google.com">Contact</a>').insertAfter('a.btn');
});
</script>
<style>
@media screen and (min-width:768px) {
    a.second-button {
    margin-left: 10px;
}
}
</style>