.gfm-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: 0.3s;
  z-index: 9999;
}
.gfm-modal.active {
  opacity: 1;
  visibility: visible;
}
.gfm-content {
  width: 100%;
  max-width: 600px;
  background: #fff;
  border-radius: 10px;
  padding: 20px;
  position: relative;
}
.gfm-close {
  position: absolute;
  top: 15px;
  right: 15px;
  font-size: 40px;
  cursor: pointer;
  display: block;
  z-index: 1;
}