.modal {
  background-color: rgba(0, 0, 0, 0.75);
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  visibility: hidden;
  opacity: 0;
  transition: all 0.5s;
}
.modal-content {
  background-color: #fff;
  max-width: 90vw;
  margin: auto;
  flex: 1;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  cursor:pointer;
}
.modal-header {
  padding: 10px;
  border-bottom: 1px solid #ddd;
}
.modal-body {
  padding: 25px;
  max-height: 80vh;
  overflow-y: auto;
}
.modal-footer {
  padding: 10px;
  border-top: 1px solid #ddd;
  text-align: right;
}
.modal.show {
  visibility: visible;
  opacity: 1;
}