option to add a Line Block underneath the Button Block but above the Events Page.??

Site URL: https://runatitshouting.co.uk/new-events-page

can i have the coding to  add a Line Block underneath the Button Block but above the Events Page.??

thank you so much!

This is what i have so far but that isnt with the line block 

thank you people !

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.0/jquery.min.js"></script>
<script>
$(document).ready(function() { 
        $('<a href="https://runatitshouting.co.uk/donate" class="sqs-block-button-element--medium sqs-block-button-element t-eventsbutton">SUPPORT US</a>').insertBefore('.eventlist.eventlist--past');
    });
</script>
<style>
  .t-eventsbutton {
    border: 2px solid black;
    padding: 1em;
    color: black !important;
    display: block;
    text-align: center;
    width: 150px;
    margin: 0 auto;
    margin-bottom: 20px;
    font-size: 20px
}
</style>

Add to Home > Design > Custom CSS

.eventlist.eventlist--past {
    border-top: 1px solid black;
    padding-top: 20px;
}