CodePen Embed - Focus example

<input type="text" class="focused" placeholder="Сфокусируйтесь на мне...">

    input{
        outline: none;
    }
    input.focused:focus{
        border: 2px solid green;
    }

This Pen is owned by Eugene on CodePen.

This Pen doesn't use any external CSS resources.

This Pen doesn't use any external JavaScript resources.