I want to update the header menu cart count when someone click the add to cart button

[Feddrow1]

I have replace all the code from the header.liquid file and put my custom code I want to update the cart count using AJAX without page lode below I have share the header.liquid file code help me to solve the issue I am using DAWN theme 

<div class="cart-position">
<a href="/cart">
<img
src="https://cdn-icons-png.flaticon.com/512/34/34568.png"
alt="cart"
>
<span class="cart-position-inside">{{ cart.item_count }}</span>
</a>