Change font colour, size in HTML code for auto-updating date

Hi there, 

I am looking to make this date bigger and also white (I have a dark background on my site). 

I have no idea how to code and pulled this from another squarespace forum. It's perfect aside from the small black text. 

<div id="dateContainer">
    <!-- Date will be displayed here -->
</div>
<script>
    const dateContainer = document.getElementById('dateContainer');
    const currentDate = new Date();
    const options = { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' };
    const formattedDate = currentDate.toLocaleDateString(undefined, options);
    dateContainer.textContent = formattedDate;
</script>

Thank you in advance!! 

@BVGIC6 Can you share your site URL for context? 

Sure - VillageGIC.com

@BVGIC6 You can add this code in Website > Pages > Website Tools > Custom CSS

#dateContainer {
    font-size: 1.8rem !important;
}