style2.css

body{
	background: #333;
	font-family: sans-serif, Arial, Helvetica;
}

.button {
	font-weight: bolder;
	flex: 1;
	background: #444;
	color: #f0f0f0;
	font-size: 1.3rem;
	text-transform: uppercase;
	letter-spacing: 3px;
	padding: 0 72px;
	border-radius: 45px;
	  -webkit-border-radius: 45px;
	  -moz-border-radius: 45px;
	border-margin: 0 24px;
	border: 1px solid #f0f0f0;
	height: 70px;
	text-decoration: none;
	text-align: center;
	vertical-align: middle;
	/* display: block;  */
	align-items: center;
    display: flex;
	flex-direction: column;
	justify-content: center;
	width:100%;
}

.button:hover, .button:active {
	background: #f0f0f0;
	color: #333;
}



.txtlbl {
  color: white;
  text-decoration: none;
  text-align: center;
  vertical-align: middle;
  min-width: 250px;
  max-width: 250px;
}


#container {
  height: 100%;
  width: 100%;
}


img#alertdisplay {
  
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  
  -webkit-animation: fade 2s alternate infinite;
  animation: fade 2s alternate infinite;
   display: block;
}



@-webkit-keyframes fade {
  0% {
    opacity: 1;
  }

  100% {
    opacity: 0;
  }

}

@keyframes fade {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}


#textdisplay {
  font-size: 40px;
  position: fixed;
  top: 50%;
  left: 50%;
  /* bring your own prefixes */
  transform: translate(-50%, -50%);
}