html, body {
  padding: 0px;
  margin: 0px;
  width: 100%;
  height: 100%;

  font-family: "Roboto", sans-serif;
  color: #333;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
}

h1 small {
  padding-top: 5px;
  font-size: 50%;
  color: #555;
  font-weight: normal;
}

a {
  text-decoration: none !important;
}

#background {
  position: fixed;
  top: 0px; left: 0px;
  width: 100%; height: 100%;
  background-color: #fff;
  z-index: -1;
}

.content {
  text-align: center;
  margin: auto auto;
  padding-bottom: 1em;
}

.fab {
  display: inline-block;
  background-color: #333;
  color: #f5f5f5;
  width: 56px;
  height: 56px;
  line-height: 56px;
  clip-path: circle(56px at center);
  vertical-align: middle;
  box-shadow: 0 2px 5px 0 rgba(0,0,0,.26);
  border-radius: 50%;
  background-clip: padding-box;
  overflow: hidden;
  transition: 0.2s ease;
  transition-property: background-color, box-shadow, transform,
    top, left, visibility, opacity;
  cursor: pointer;
  transform: scale(1);
}
.fab:hover {
  box-shadow: 0 2px 7px 0 rgba(0,0,0,.3);
}
.fab:active {
  box-shadow: 0 2px 8px 0 rgba(0,0,0,.4);
}
.fab > .fa {
  vertical-align: middle;
  line-height: 56px;
}

.fab .inner {
  width: 100%;
  height: 100%;
  text-align: center;
  vertical-align: center;
  border-radius: 50%;
}

.fab.huge {
  z-index: 10;
  display: block;
  margin-left: auto;
  margin-right: auto;
  line-height: 128px;
  width: 128px;
  height: 128px;
}
.fab.huge:hover {
  transform: scale(1.1);
}
.fab.huge:active {
  transform: scale(1.2);
  box-shadow: 0 2px 20px 0 rgba(0,0,0,.5);
}

.fabs {
  padding-top: 20px;
  visibility: hidden;
}
.fabs.expanded {
  visibility: visible;
}
.fabs .sub.fab {
  z-index: 9;
  position: relative;
  opacity: 0;
  margin: 5px;
}
.fabs.expanded .sub.fab {
  top: 0px !important;
  left: 0px !important;
  opacity: 1;
}

.spinning {
  animation: spin linear 30s;
  animation-iteration-count: infinite;
  transform-origin: 50% 50%;
}

.ripple {
  display: inline-block;
  position: absolute;
  background: #ccc;
  transform: scale(0);
  border-radius: 50%;
}
.ripple.animate {
  animation: ripple 0.65s linear;
}

@keyframes ripple {
  100% {
    opacity: 0;
    transform: scale(2.5);
  }
}

@keyframes spin {
  0% {
    transform: rotate(0deg) ;
  }
  50% {
    transform: rotate(180deg) ;
  }
  100% {
    transform: rotate(360deg) ;
  }
}