Не привязывать элемент к конкретной разметке

  svg {height: 100px}
  .st {
    fill: rgb(255, 0, 0, 90%) !important;
    transform-origin: 3.1px 0;
    transform: scaleX(-1);
    transition: all .2s linear 0s;
  }
  .ff {fill: rgb(131 131 131) !important}

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