.cb-slidein {
  display: inline-flex; align-items: center;
  gap: 10px; cursor: pointer; user-select: none;
}
.cb-slidein__input { display: none; }
.cb-slidein__box {
  width: 24px; height: 24px; border-radius: 7px;
  border: 2px solid rgba(30,217,138,.3);
  display: flex; align-items: center;
  justify-content: center; flex-shrink: 0;
  color: transparent;
  transition: background .25s, border-color .25s,
              color .25s;
}
.cb-slidein__text {
  font-size: 14px; color: #1ed98a;
  max-width: 0; overflow: hidden;
  white-space: nowrap; opacity: 0;
  transition: max-width .4s cubic-bezier(.23,1,.32,1),
              opacity .4s ease;
}
.cb-slidein__input:checked + .cb-slidein__box {
  background: #1ed98a; border-color: #1ed98a;
  color: #fff;
}
.cb-slidein__input:checked ~ .cb-slidein__text {
  max-width: 200px; opacity: 1;
}