Using the door designer on door-designer.co.uk, select a 'Contemporary' door style, then apply 'Anthracite Grey' as the color, 'Obscure' as the glass style, and 'Black' for the hardware. Once designed, generate a preview of the door.
Navigate to 'door-designer.co.uk'. Click the 'Door' button (ID 16). Select 'Contemporary' as the door style. Click the 'Colour' button (ID 18). Select 'Anthracite Grey' as the door color. Click the 'Glass' button (ID 20). Select 'Obscure' as the glass style. Click the 'Hardware' button (ID 22). Select 'Black' as the hardware finish. Click the 'Preview' button (ID 24).
Successfully navigate through all design steps: Door, Colour, Glass, Hardware, and Preview. Select 'Contemporary' door style. Select 'Anthracite Grey' color. Select 'Obscure' glass style. Select 'Black' hardware finish. Successfully generate and display the preview of the designed door.