html, body {
  background: linear-gradient(90deg, #4b6cb7 0%, #182848 100%);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
  color: #fff;
}
.graph_container {
  position: relative;
  width: 550px;
  height: 550px;
  padding: 40px;
  display: inline-block;
  box-shadow: 0px 0px 50px 1px rgba(0,0,0,0.5);
  background: rgba(0, 0, 0, 0.75);
  border-radius: 20px;
  margin: 2.5%;
}
.graph_title {
  position: absolute;
  top: 20px;
  left: 0;
  transform: translate(0, 50%);
  width: 100%;
  text-align: center;
  color: rgba(255, 255, 255, 0.75);
}
.x_axis {
  position: absolute;
  bottom: 20px;
  left: 0;
  transform: translate(0, -50%);
  width: 100%;
  text-align: center;
  color: rgba(255, 255, 255, 0.75);
}
.y_axis {
  position: absolute;
  left: -33px;
  top: 50%;
  transform: translate(0, -50%) rotate(-90deg);
  color: rgba(255, 255, 255, 0.75);
}