.img-preview {
  width: 256px;
  height: 256px;
  position: relative;
  border: 5px solid #f8f8f8;
  box-shadow: 0px 2px 4px 0px rgba(0, 0, 0, 0.1);
  margin-top: 1em;
  margin-bottom: 1em;
}

.img-preview > div {
  width: 100%;
  height: 100%;
  background-size: 256px 256px;
  background-repeat: no-repeat;
  background-position: center;
}

input[type="file"] {
  display: none;
}

.upload-label {
  display: inline-block;
  padding: 12px 30px;
  background: #39d2b4;
  color: #fff;
  font-size: 1em;
  transition: all 0.4s;
  cursor: pointer;
}

.upload-label:hover {
  background: #34495e;
  color: #39d2b4;
}

.loader {
  border: 8px solid #f3f3f3; /* Light grey */
  border-top: 8px solid #3498db; /* Blue */
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 1s linear infinite;
}

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