.modal {
  display: none;
  align-items: center;
  justify-content: center;
  position: fixed;
  z-index: 1;
  width: 100%;
  height: 100%;
}
.modal[open] {
  display: flex;
}
.model-inner {
  background-color: white;
  border-radius: 0.5em;
  max-width: 600px;
  padding: 2em;
  margin: auto;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid black;
}
#modal-overlay {
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 0;
  background-color: black;
  opacity: 0.5;  
}