I am new to Javacript, and I want to know how to target the first character of the word `test`, and change the size of it using Javascript.

This is my code

```
<div id="logo">
    <style>
        #logo{
            transition: 0.3s ease;
        }
    </style>
<h1 onmousemove="move()" onmouseout="out()">test</h1>
<script>
    function move(){
        document.getElementById("logo").style.color = "red";     
    }
    move();
    function out(){
        document.getElementById("logo").style.color = "black";
    }
    out();
    </script>
</div>

```