@keyframes rollon-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}
.rollon {
  display: none;
}
.rollon.is-active {
  display: inline-block;
}
.rollon > span {
  animation: rollon-spin 1s linear infinite;
}
.rollon.rollon-sibling {
  vertical-align: middle;
  margin-left: 8px;
}
.rollon.rollon-container.is-active {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}