dark-mode-toggle.slider::part(toggleLabel) {
    display: inline-block;
    position: relative;
    height: calc(var(--dark-mode-toggle-icon-size, 1rem) * 2);
    width: calc(var(--dark-mode-toggle-icon-size, 1rem) * 3.5);
    background-color: #b7bbbd;
    border-radius: var(--dark-mode-toggle-icon-size, 1rem);
    transition: 0.4s;
  }
  
  dark-mode-toggle.slider::part(toggleLabel)::before {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: calc(var(--dark-mode-toggle-icon-size, 1rem) * 0.25);
    left: calc(var(--dark-mode-toggle-icon-size, 1rem) * 0.25);
    height: calc(var(--dark-mode-toggle-icon-icon-size, 1rem) * 1.5);
    width: calc(var(--dark-mode-toggle-icon-icon-size, 1rem) * 1.5);
    border-radius: 100%;
    box-shadow: 0 0.15em 0.3em rgb(0 0 0 / 15%), 0 0.2em 0.5em rgb(0 0 0 / 30%);
    background-color: #fff;
    color: #333;
    transition: 0.4s;
    content: "";
    background-position: center;
    background-size: var(--dark-mode-toggle-icon-icon-size, 1rem);
    background-image: var(--dark-mode-toggle-icon-light-icon, url("https://googlechromelabs.github.io/dark-mode-toggle/demo/sun.svg"));
    box-sizing: border-box;
  }
  
  dark-mode-toggle.slider[mode="dark"]::part(toggleLabel) {
    background-color: #4e5255;
  }
  
  dark-mode-toggle.slider[mode="dark"]::part(toggleLabel)::before {
    left: calc(100% - var(--dark-mode-toggle-icon-size, 1rem) * 1.75);
    border-color: #000;
    background-color: #ccc;
    color: #000;
    background-size: var(--dark-mode-toggle-icon-size, 1rem);
    background-image: var(--dark-mode-toggle-dark-icon, url("https://googlechromelabs.github.io/dark-mode-toggle/demo/moon.svg"));
    filter: var(--dark-mode-toggle-icon-filter, invert(100%));
    box-shadow: 0 0.5px hsl(0deg 0% 100% / 16%);
  }
  
  dark-mode-toggle.slider::part(toggleLabel)::after {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: calc(var(--dark-mode-toggle-icon-size, 1rem) * 0.25);
    left: calc(100% - var(--dark-mode-toggle-icon-size, 1rem) * 1.75);
    height: calc(var(--dark-mode-toggle-icon-size, 1rem) * 1.5);
    width: calc(var(--dark-mode-toggle-icon-size, 1rem) * 1.5);
    border-radius: 100%;
    color: #333;
    content: "";
    background-position: center;
    background-size: var(--dark-mode-toggle-icon-size, 1rem);
    background-image: var(--dark-mode-toggle-dark-icon, url("https://googlechromelabs.github.io/dark-mode-toggle/demo/moon.svg"));
    background-repeat: no-repeat;
    box-sizing: border-box;
    opacity: 0.5;
  }
  
  dark-mode-toggle.slider[mode="dark"]::part(toggleLabel)::after {
    left: calc(var(--dark-mode-toggle-icon-size, 1rem) * 0.25);
    background-image: var(--dark-mode-toggle-light-icon, url("https://googlechromelabs.github.io/dark-mode-toggle/demo/sun.svg"));
    filter: var(--dark-mode-toggle-icon-filter, invert(100%));
  }