Header Code

<style>
/* Added styles in header. */
body {background: green !Important;}
</style>
<script>
/* Added script in header */
alert("Executed from header");
</script>


Footer Code

<style>
/* Added styles in footer. */
body {background: yellow !Important;}
</style>
<script>
/* Added script in footer */
alert("Executed from footer");
</script>