html {
  box-sizing: border-box;
}
*,
*:before,
*:after {
  box-sizing: inherit;
}

body {
  height: 100vh;
  width: 100vw;
  padding: 0;
  margin: 0;
  position: relative;
  /* Need to exclude the scrollbar */
  min-width: calc(100vw - (100vw - 100%));
  min-height: calc(100vh - (100vh - 100%));
  overflow: hidden;
}

#main {
  height: 100%;
  width: 100%;
  justify-content: center;
  display: flex;
  align-items: center;
  flex-direction: column;
}


.button-3d {
  display: block;
  position: relative;
  margin: 0.5em 0;
  padding: 0.8em 2.2em;
  cursor: pointer;
  background: #fff;
  border: none;
  border-radius: 0.4em;
  text-transform: uppercase;
  font-size: 1.4em;
  font-family: 'Work Sans', sans-serif;
  font-weight: 500;
  letter-spacing: 0.04em;
  mix-blend-mode: color-dodge;
  perspective: 500px;
  transform-style: preserve-3d;
  background-color: yellowgreen;
}