#btn--yp {
  box-sizing: content-box;
  position: fixed;
  z-index: 9;
  bottom: 1em;
  right: 1em;
  border: solid 1em transparent;
  width: 4.625em;
  height: 3.25em;
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/2017/icon-yp.svg) 50%/cover content-box;
  font: 16px/ 1.25 trebuchet ms, sans-serif;
  text-indent: 200vw;
  text-shadow: none;
  filter: grayscale(1) drop-shadow(0 0 1px #e8e0e0);
  transition: .5s;
  white-space: nowrap;
}
#btn--yp:before {
  box-sizing: inherit;
  position: absolute;
  left: 0;
  bottom: 100%;
  margin: 1em -.5em;
  padding: .5em;
  width: 100%;
  border-radius: 5px;
  background: #e8e0e0;
  color: #000;
  text-align: center;
  text-decoration: none;
  text-indent: 0vw;
  white-space: normal;
  animation: float 1s ease-in-out infinite alternate;
  content: attr(data-txt);
}
#btn--yp:hover, #btn--yp:focus {
  outline: none;
  filter: grayscale(0) drop-shadow(0 0 1px crimson);
}

@keyframes float {
  to {
    transform: translateY(0.75em);
  }
}


img {
  place-self: center;
  width: Min(20em, 90vw);
  border: solid 1.25em transparent;
  padding: 0.75em;
  border-radius: 50%;
  background: radial-Gradient(circle at calc(50% + (50% - 0.625em)*1) calc(50% + (50% - 0.625em)*0), #f03355 calc(0.625em - 1px), transparent 0.625em), radial-Gradient(circle at calc(50% + (50% - 0.625em)*0) calc(50% + (50% - 0.625em)*1), #514b82 calc(0.625em - 1px), transparent 0.625em), radial-Gradient(circle at calc(50% + (50% - 0.625em)*-1) calc(50% + (50% - 0.625em)*0), #ffa516 calc(0.625em - 1px), transparent 0.625em), radial-Gradient(circle at calc(50% + (50% - 0.625em)*0) calc(50% + (50% - 0.625em)*-1), #25b09b calc(0.625em - 1px), transparent 0.625em), conic-Gradient(#f03355 0% 90deg, #514b82 0% 180deg, #ffa516 0% 270deg, #25b09b 0% 360deg);
  background-origin: border-box;
  --mask: radial-Gradient(closest-side, red calc(100% - 1.25em - 0.75em - 1px), transparent calc(100% - 1.25em - 0.75em) calc(100% - 1.25em), red calc(100% - 1.25em + 1px) calc(100% - 1px), transparent);
  -webkit-mask: var(--mask);
  mask: var(--mask);
}