.box {
border-top: none;
border-bottom: none;
}

.loader {
  border: 6px solid #f3f3f3;
  border-radius: 50%;
  border-top: 6px solid #279ce2;
  width: 240px;
  height: 240px;
  -webkit-animation: spin 1s linear infinite;
  margin: 0 auto;
  /* Safari */
  animation: spin 1s linear infinite;
}

/* Safari */

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

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