When the code needs a horizontal scrollbar, it also adds a vertical scrollbar (because the vertical space shrinks after the height is frozen).  [demo](https://play.codehike.org/#N4IgtgJgHiBcIB0B2BiABACQKYBscHtlkBRCASwBc0wsA6IpAA2YAcBPCgC3yTU9wK12yFgCcySCgAoEIACqcyAZzTK0AYXwQsmMgGsdANyyiKZAMYBDHGiXnR+PACNLotMdMXrt+45wu3DzMrGzsHZ1c0WQBKEXFJGXlFFTVNbV0DdxNg7zC-AKzPEJ9w-0igr1DfCLcYuIlpWQU1VK0dDH0jbMqS-PLu4ryawpyq0oK6pmYGEAAaEHMlJTgQIVEsQzIsAHcAWnMeCksJEzRgKN5qVwBzCVg0AA4WKABuC4BfOYWeADMya7goBwJwAcgBXMBOEzLWA-axKLDzJTcbaadgAITBFAoPDgcJwCPmXCwNBWYEsFBMZGsuwgrgMohA73eQA)
