when building css variables, how to add prefix to to every css variable

[Jin Yao]

• the css variables names are easy to get conflicts in the examples.

• instead of current example

:root {
  --color-black: #1b1f24;
  --color-blue0: #ddf4ff;
  --color-blue1: #b6e3ff;
}

• I want below

:root {
  --ibm-color-black: #1b1f24;
  --ibm-color-blue0: #ddf4ff;
  --ibm-color-blue1: #b6e3ff;
}

[Jin Yao]

I find it again