.root {
  position: relative;
  margin: 10px 10px 100px 10px;
  min-height: 350px;
  padding: 10px;
  text-align: center;
}

button {
  margin: 20px;
  padding: 50px;
}

.loader {
  display: none !important;
}

.loading .loader {
  display: flex !important;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.5);
}

.pre {
  margin: 20px;
  padding: 10px;
  font-size: 70%;
  white-space: pre-wrap;
  border: 1px dashed silver;
  color: gray;
}