.md-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  width: 50%;
  max-width: 350px;
  min-width: 250px;
  height: auto;
  z-index: 2000;
  visibility: hidden;
  -webkit-backface-visibility: hidden;
  -moz-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-transform: translateX(-50%) translateY(-50%);
  -moz-transform: translateX(-50%) translateY(-50%);
  -ms-transform: translateX(-50%) translateY(-50%);
  transform: translateX(-50%) translateY(-50%);
}

.md-show {
  visibility: visible;
}

.md-overlay {
  position: fixed;
  width: 100%;
  height: 100%;
  visibility: hidden;
  top: 0;
  left: 0;
  z-index: 1000;
  opacity: 0;
  background: rgba(40, 43, 49, 0.8);
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}

.md-show ~ .md-overlay {
  opacity: 1;
  visibility: visible;
}

/* Content styles */
.md-content {
  color: #333;
  background: #fff;
}

/* Effect 1: Fade in and scale up */
.md-effect-1 .md-content {
  -webkit-transform: scale(0.7);
  -ms-transform: scale(0.7);
  transform: scale(0.7);
  opacity: 0;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}

.md-show.md-effect-1 .md-content {
  -webkit-transform: scale(1);
  -ms-transform: scale(1);
  transform: scale(1);
  opacity: 1;
}

.md-content {
  padding: 10px;
  border-radius: 10px;
}

.md-close {
  border: none;
  outline: none;
  border-radius: 3px;
  background-color: greenyellow;
}