codepens/cacheable-3-colour-svgs-via-use/dist/style.css

@import url("https://fonts.googleapis.com/css2?family=Barlow:wght@400&display=swap");
svg {
  -webkit-backface-visibility: hidden;
  -webkit-transform: translateZ(0) scale(1);
  font-smoothing: antialiased !important;
}

body {
  margin: 0;
  display: flex;
  justify-content: center;
  min-height: 100vh;
  min-width: 375px;
  color: #0e0e11;
  background: #eeeef1;
  font-family: "Barlow", sans-serif;
  font-size: 14px;
  transition: all 0.1s ease-in-out;
}
body[data-theme=dark] {
  color: white;
  background: #1c1c21;
}

.layout {
  display: grid;
  grid-template-rows: 20fr auto 21fr;
  grid-template-columns: 1fr 2fr 1fr;
  grid-template-areas: "header header header" ". icons ." "footer footer footer";
  justify-items: center;
  min-height: 192px;
  flex: 1 0 0;
  max-width: 1200px;
}

.icons {
  display: flex;
  grid-area: icons;
}
.icons button {
  all: unset;
  position: relative;
  cursor: pointer;
}
@media (hover: hover) {
  .icons button::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    opacity: 0;
    background: white;
    z-index: -1;
    border-radius: 10%;
    transition: all 0.1s ease-in-out;
  }
  [data-theme=dark] .icons button::before {
    background: #0e0e11;
  }
}
.icons button:hover svg, .icons button:hover::before {
  opacity: 1;
}
.icons button:hover svg {
  color: #05c7b7;
  fill: #007399;
}
.icons button.alt:hover svg {
  color: #ffaa00;
  fill: #e5592e;
}

svg {
  color: #75758a;
  fill: #0e0e11;
}
[data-theme=dark] svg {
  color: white;
  fill: #868698;
}
svg.defs {
  position: absolute;
  height: 0;
  width: 0;
}
svg.icon {
  width: 60%;
  margin: 20%;
  opacity: 0.6;
  transition: all 0.1s ease-in-out;
}

.segmented-control {
  grid-area: header;
  align-self: start;
  display: flex;
  width: 144px;
  margin: 27px 0;
  height: 27px;
  border-radius: 5px;
  background: white;
  z-index: 1;
  transition: all 0.1s ease-in-out;
}
[data-theme=dark] .segmented-control {
  background: #0e0e11;
}
[data-theme=dark] .segmented-control label {
  color: #868698;
}
[data-theme=dark] .segmented-control label:last-child::before {
  background-color: #1c1c21;
}
.segmented-control input {
  position: absolute;
  transform: scale(0);
}
.segmented-control input:checked + label {
  color: inherit;
}
.segmented-control input:checked + label ~ label:last-child::before {
  transform: translate(-100%);
}
.segmented-control label {
  flex: 1 0 0px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  padding-bottom: 1px;
  color: #75758a;
  transition: all 0.1s ease-in-out;
  cursor: pointer;
}
.segmented-control label:hover {
  color: inherit;
}
.segmented-control label:last-child::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  background-clip: padding-box;
  background-color: #eeeef1;
  border-radius: 5px;
  border: 2px solid transparent;
  z-index: -1;
  transition: transform 0.25s ease-in-out, background-color 0.1s ease-in-out;
}

.links {
  grid-area: footer;
  align-self: end;
  display: flex;
  opacity: 0.55;
}
.links a {
  all: unset;
  cursor: pointer;
  margin: 27px 0;
  padding: 0 0.5em;
  color: #75758a;
  transition: all 0.1s ease-in-out;
}
[data-theme=dark] .links a {
  color: #868698;
}
.links a:hover {
  color: inherit;
}