html, body {
  height: 100%;
}

body {
  background-image: linear-gradient(rgba(0, 0, 0, 0.25), rgba(255, 255, 255, 0.25) 50%, rgba(255, 255, 255, 0) 50%), linear-gradient(#e31212, #e31212 50%, #fff 50%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Nunito", sans-serif;
}

#speedtest {
  position: relative;
  width: 300px;
  height: 300px;
  padding: 20px;
  border-radius: 6px;
  box-sizing: border-box;
}
#speedtest #gauge {
  width: 100%;
  height: 100%;
  padding: 12px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 32px rgba(21, 55, 172, 0.25), inset 0 -192px 192px -240px #e31212;
  box-sizing: border-box;
}
#speedtest #gauge path:first-child {
  opacity: 1 !important;
  display: block !important;
}
#speedtest #gauge-label {
  position: absolute;
  top: 47.5%;
  left: 50%;
  font-size: 64px;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  color: #e31212;
}
#speedtest #gauge-label:after {
  content: "Mbit/s";
  position: absolute;
  font-size: 35%;
  bottom: 5px;
  left: 50%;
  -webkit-transform: translate(-50%, 100%);
          transform: translate(-50%, 100%);
}
#speedtest:before, #speedtest:after {
  display: block;
  position: absolute;
  bottom: 25%;
  font-family: inherit;
  font-size: 14px;
  color: #9198af;
}
#speedtest:before {
  content: "0";
  left: 28%;
}
#speedtest:after {
  content: "100";
  right: 28%;
}