.modal-container {
  margin: 0 auto;
 /* padding-top: 60px;*/
  position: relative;
}

.modal-container button {
  display: block;
  /*margin: 0 auto;*/
  color: #000;
  background-color:#FF0;
  line-height: 50px; 
  font-size: 22px;
  border: 1;
  border-radius: 3px;
  transition: background 0.3s ease-in;
}

.modal-container .modal-backdrop {
  height: 0;
  width: 0;
  opacity: 0;
  overflow: hidden;
  transition: opacity 0.2s ease-in;
}

.modal-container #modal-toggle {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}



.modal-container #modal-toggle:hover ~ button { background: #0000ff; color:#FFF; }

.modal-container #modal-toggle:checked {
  width: 100vw;
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 9;
  opacity: 0;
}

.modal-container #modal-toggle:checked ~ .modal-backdrop {
  background-color: rgba(0, 0, 0, 0.6);
  width: 100vw;
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 9;
  pointer-events: none;
  opacity: 1;
}

.modal-container #modal-toggle:checked ~ .modal-backdrop .modal-content {
  background-color: #fff;
  max-width: 400px;
  width: 100%;
  height: 280px;
  padding: 10px 30px;
  position: absolute;
  left: calc(50% - 200px);
  top: 12%;
  border-radius: 4px;
  z-index: 999;
  pointer-events: auto;
  cursor: auto;
  box-shadow: 0 3px 7px rgba(0, 0, 0, 0.6);
}

@media (max-width: 400px) {

.modal-container #modal-toggle:checked ~ .modal-backdrop .modal-content { 
	left: 0; 
	max-width: auto;
    width: auto;
	margin:1%;
}
}

.modal-container #modal-toggle:checked ~ .modal-backdrop .modal-content .modal-close {
  color: #666;
  position: absolute;
  right: 2px;
  top: 0;
  padding-top: 7px;
  background: #fff;
  font-size: 16px;
  width: 25px;
  height: 28px;
  font-weight: bold;
  text-align: center;
  cursor: pointer;
}

.modal-container #modal-toggle:checked ~ .modal-backdrop .modal-content .modal-close.button {
  top: initial;
  bottom: 20px;
  right: 20px;
  background: #ff0;
  color: #fff;
  width: 200px;
  border-radius: 2px;
  font-size: 14px;
  font-weight: normal;
}

.modal-container #modal-toggle:checked ~ .modal-backdrop .modal-content .modal-close.button:hover {
  color: #fff;
  background: #999;
}

.modal-container #modal-toggle:checked ~ .modal-backdrop .modal-content .modal-close:hover { color: #333; }