URL：https://thumb7.shutterstock.com/thumb_large/69545/1455987221/stock-photo-bright-purple-glossy-glass-number-seven-in-a-d-illustration-with-a-shiny-glass-effect-with-light-1455987221.jpg
掲載元：https://www.goodfreephotos.com/other-photos/numbers/bevel-glass-number-7.png.php
