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

.loader {
  position: fixed;
  top: 0px;
  left: 0px;
  width: 100%;
  height: 100%;
  margin: 0;
      background: rgba(0,0,0,0.5);
  font-family: 'Roboto', sans-serif;
	    z-index: 99999999;
}
.loader .loading_box {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding:5vmax;

}
.loader .loading_box.symbol {
  text-align: center;
}
.loader .loading_box.symbol p {
  font-size:245%;
  font-weight: bold;
  color: #fff;
  margin: 30px 0;
}
.loader .loading_box.symbol div {
  width: 50px;
  height: 50px;
  margin: 0px auto;
  border-radius: 50%;
  border-top: 5px solid #fff;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-bottom: 5px solid transparent;
  background: rgba(255, 255, 255, 0);
  animation-name: rotate;
  animation-duration: 1s;
  animation-iteration-count: infinite;
}