.check-block {
  display: none;
}
.check-block .check-block-screen {
  position: fixed;
  top:0;
  left: 0;
  height: 100%;
  width: 100%;
  z-index: 9998;
  background-color: rgba(0,0,0,.8);
}
.check-block .check-block-message {
  position: absolute;
  z-index: 9999;
  margin: 0 auto;
  top: 10%;
  background: white;
  width: 100%;
  padding: 20px;
  border-radius: 5px;
  text-align: center;
}
@media only screen and (min-width : 480px) {
	.check-block .check-block-message {
	  width: 600px;
	  margin-left: -300px;
	  left: 50%;
	}
}