management/src/components/StrengthMeter/index.scss

.zh-strength-meter {
  position: relative;

  &-bar {
    position: relative;
    height: 4px;
    margin: 10px auto 6px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 3px;

    &::before,
    &::after {
      position: absolute;
      z-index: 10;
      display: block;
      width: 20%;
      height: inherit;
      content: '';
      background: transparent;
      border-color: #ffffff;
      border-style: solid;
      border-width: 0 5px 0 5px;
    }

    &::before {
      left: 20%;
    }

    &::after {
      right: 20%;
    }

    &--fill {
      position: absolute;
      width: 0;
      height: inherit;
      background: transparent;
      border-radius: inherit;
      transition: width 0.5s ease-in-out, background 0.25s;

      &[data-score='0'] {
        width: 20%;
        background: #e74242;
      }

      &[data-score='1'] {
        width: 40%;
        background: #ed6f6f;
      }

      &[data-score='2'] {
        width: 60%;
        background: #efbd47;
      }

      &[data-score='3'] {
        width: 80%;
        background: rgba(85, 209, 135, 0.5);
      }

      &[data-score='4'] {
        width: 100%;
        background: #55d187;
      }
    }
  }
}