:root{
  --ease-standard:cubic-bezier(.2,.6,.2,1); /* @kind other */
  --ease-out:cubic-bezier(0,.55,.45,1); /* @kind other */
  --dur-fast:120ms; /* @kind other */
  --dur-base:200ms; /* @kind other */
  --dur-slow:420ms; /* @kind other */
}