.modal {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  background: rgba(77, 77, 77, .7);
  transition: all .4s;
  justify-content: center;
  align-items: center;
}

.modal:target {
  visibility: visible;
  opacity: 1;
  display: flex;
  justify-content: center;
  align-items: center; 
}
.show {
  visibility: visible;
  opacity: 1;
  display: flex;
  justify-content: center;
  align-items: center; 
}
.modal__header {
  margin-bottom: 1em;
  border-bottom: 1px;
  border-bottom-color: #e0dee2;
}
.modal__content {
  border-radius: 4px;
  position: relative;
  width: 350px;
  max-width: 90%;
  background: #fff;
  padding: 1em 2em;
}

.modal__footer {
  text-align: right;
  a {
    color: #585858;
  }
  i {
    color: #d02d2c;
  }
}
.modal__close {
  position: absolute;
  top: 10px;
  right: 10px;
  color: #585858;
  text-decoration: none;
}