.pre button {
  margin-left: 20px;
}
.pre :global .slide {
  background-color: unset;
}
.pre :global i {
  display: flex;
  justify-content: center;
  align-items: center;
}
.pre .btnDiv {
  display: flex;
  justify-content: center;
  height: 40px;
}
.pre .btnDiv > * {
  margin-left: 20px;
}