<input type="checkbox" name="button" id="button">
<label class="bevel" for="button">Get Bevel’d</label>
<span>Bevel Up</span>

$red: #f33;
$red2: desaturate(darken($red, 15%), 18%);
$buttonHeight: 54;
html, body {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column-reverse;
  width: 100%;
  height: 100%;
  font-family: "Chewy";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transform: scale(1.25);
  overflow: hidden;
  @media (max-width: 320px) { transform: scale(1.125); }
  @media (max-width: 280px) { transform: scale(1.0625); }
  @media (max-width: 220px) { transform: scale(1); }
  @media (max-width: 200px) { transform: scale(0.9); }
  white-space: nowrap;
  user-select: none;
}
input { display: none; }
label { cursor: pointer; }
.bevel {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 0 #{$buttonHeight/2 + 5 + "px"};
  // ^ 5px buffer between triangles and text
  height: #{$buttonHeight + "px"};
  background: $red linear-gradient(to bottom, $red 50%, $red2 50%);
  border-radius: 0px;
  box-shadow:
          0px  15px 25px -10px rgba(#000, 0.5),
    inset 0px   0px  0px   0px rgba($red, 0),
    inset 0px -27px  0px   0px $red2;
  font-size: 20px;
  text-align: center;
  text-shadow:
     0px 3px  5px $red2,
     0px 5px 10px $red2,
     0px 5px 10px $red2,
     0px 5px 10px $red2,
     0px 5px 10px $red2;
  color: #fff;
  letter-spacing: 0.4px;
  overflow: hidden;
  outline: 0 !important;
  transform: scale(1.01);
  transition: all 0.2s ease-in-out;
  &:before, &:after {
    content: " ";
    width: #{$buttonHeight/2 + "px"};
    max-width: 50%;
    height: 100%;
    position: absolute;
    top: 0;
    transition: all 0.135s ease-in-out;
    transition: all 0.135s cubic-bezier(0.74, 0.16, 0.24, 0.92);
    transition-delay: 0.15s;
  }
  &:before {
    left: 0;
    background:
      linear-gradient(45deg, transparent calc(200% / 3), rgba($red, 1) calc(200% / 3)),
      linear-gradient(-45deg, rgba($red2, 1) calc(100% / 3), transparent calc(100% / 3)),
      linear-gradient(to right, $red, $red2);
  }
  &:after {
    right: 0;
    background:
      linear-gradient(-45deg, transparent calc(200% / 3), rgba($red, 1) calc(200% / 3)),
      linear-gradient(45deg, rgba($red2, 1) calc(100% / 3), transparent calc(100% / 3)),
      linear-gradient(to left, $red, $red2);
  }
  &:hover {
    transform: scale(1.07);
    box-shadow:
            0px  25px 40px -5px rgba(#000, 0.3),
      inset 0px   0px  0px  0px rgba($red, 0),
      inset 0px -27px  0px  0px $red2;
  } 
  input:checked ~ & {
    padding: 0 #{$buttonHeight/4 + 5 + "px"};
    background: rgba($red, 0);
    box-shadow:
          0px 5px 15px -5px rgba(#000, 0.3),
      inset 0px 0px  0px  4px $red,
      inset 0px 0px  0px  0px $red2;
    border-radius: 10px;
    font-size: 24px;
    font-weight: 700;
    text-shadow:
       0px 3px  5px rgba($red2, 0),
       0px 5px 10px rgba($red2, 0),
       0px 5px 10px rgba($red2, 0),
       0px 5px 10px rgba($red2, 0),
       0px 5px 10px rgba($red2, 0);
    color: $red;
    transform: scale(0.7) rotate(-6deg);
    transition: all 0.25s ease-in-out, text-shadow 0s ease-in-out, box-shadow 0.25s ease-in-out;
    transition: all 0.45s cubic-bezier(0.6, -0.9, 0.39, 1.65), text-shadow 0s ease-in-out, box-shadow 0.45s cubic-bezier(0.6, -0.9, 0.39, 1.65);
    transition-delay: 0.135s;
    &:before, &:after { transition-delay: 0s; }
    &:before { transform: translateX(-100%); }
    &:after { transform: translateX(100%); }
    + span {
      // opacity: 0.15;
      color: rgba($red, 0.1875);
      transform: translateY(56px);
    }
  }
}
span {
  display: block;
  margin-bottom: 10px;
  font-family: "Didact Gothic";
  font-size: 32px;
  font-weight: 700;
  color: #222;
  z-index: -1;
  transition: all 0.25s ease-in-out;
  transition: all 0.45s cubic-bezier(0.74, 0.16, 0.24, 0.92);
  transition-delay: 0.135s;
}