body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #f1f1f1;
}

.loader {
    position: relative;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: linear-gradient(#f07e6e, #84cdfa, #5ad1cd);

}

@keyframes animate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.loader span {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(#f07e6e, #84cdfa, #5ad1cd);
}

.loader span:nth-child(1) {
    filter: blur(5px);
}

.loader span:nth-child(2) {
    filter: blur(10px);
}

.loader span:nth-child(3) {
    filter: blur(25px);
}

.loader span:nth-child(4) {
    filter: blur(50px);
}

.loader:after {
    content: '';
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
    background: #f1f1f1;
    border: solid white 10px;
    border-radius: 50%;
}
#startButton {
  position: absolute;
  left: 50%;
  bottom: 5%;
  transform: translateX(-50%);
  color: white;
  background-color: #DD993E;
  border: none;
  border-radius: 5px;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
}
#startButton:after {
  content: "";
  background-image: url("images/play.png");
  background-size: contain;
  display: inline-block;
  width: 20px;
  height: 20px;
  margin-left: 10px;
  vertical-align: middle;
}
#number {
  position: absolute;
  font-size: 72px;
  color: #DD993E;
}

@media (max-height: 800px) {
  .loader {
      position: relative;
      width: 450px;
      height: 450px;
      border-radius: 50%;
      background: linear-gradient(#f07e6e, #84cdfa, #5ad1cd);
  }
  #number {
    position:absolute;
    font-size: 62px;
    color: #DD993E;
  }
}

@media (max-height: 700px) {
  .loader {
      position: relative;
      width: 400px;
      height: 400px;
      border-radius: 50%;
      background: linear-gradient(#f07e6e, #84cdfa, #5ad1cd);
  }
}

@media (max-height: 650px) {
  .loader {
      position: relative;
      width: 350px;
      height: 350px;
      border-radius: 50%;
      background: linear-gradient(#f07e6e, #84cdfa, #5ad1cd);
  }
  #number {
    position:absolute;
    font-size: 52px;
    color: #DD993E;
  }
}