:root {
  --cd-color-1: hsl(53, 29%, 95%);
  --cd-color-1-h: 53;
  --cd-color-1-s: 29%;
  --cd-color-1-l: 95%;
  --cd-color-2: hsl(330, 13%, 42%);
  --cd-color-2-h: 330;
  --cd-color-2-s: 13%;
  --cd-color-2-l: 42%;
  --cd-color-3: hsl(5, 76%, 62%);
  --cd-color-3-h: 5;
  --cd-color-3-s: 76%; 
  --cd-color-3-l: 62%;
  --cd-back-to-top-size: 40px;
  --cd-back-to-top-margin: 20px;
  --font-family-sans-serif:"Roboto", sans-serif;
  --/*font-family-monospace:SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;*/
}
@supports (--css: variables) {
  @media (min-width: 64rem) {
    :root {
      --cd-back-to-top-size: 60px;
      --cd-back-to-top-margin: 30px
    }
  }
}
.cd-top {
  position: fixed;
  bottom: 20px;
  bottom: var(--cd-back-to-top-margin);
  right: 20px;
  right: var(--cd-back-to-top-margin);
  display: inline-block;
  height: 40px;
  z-index: 999999;
  height: var(--cd-back-to-top-size);
  width: 40px;
  width: var(--cd-back-to-top-size);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
  background: url(../img/cd-top-arrow.svg) no-repeat center 50%;
  background-color: hsla(5, 76%, 62%, 0.9);
  background-color: hsla(var(--cd-color-3-h), var(--cd-color-3-s), var(--cd-color-3-l), 0.9)
}
.js .cd-top {
  visibility: hidden;
  opacity: 0;
  transition: opacity .3s, visibility .3s, background-color .3s
}
.js .cd-top--is-visible {
  visibility: visible;
  opacity: 1
}
.js .cd-top--fade-out {
  opacity: .5
}
.js .cd-top:hover {
  background-color: hsl(5, 76%, 62%);
  background-color: var(--cd-color-3);
  opacity: 1
}