<!-- عند التركيز على الاستمارة، أضف الصنف -->
<form onfocus="this.className='focused'">
<input type="text" name="name" value="Name">
<input type="text" name="surname" value="Surname">
</form>
<style> .focused { outline: 1px solid red; } </style>
This Pen doesn't use any external CSS resources.
This Pen doesn't use any external JavaScript resources.