html, body {
  height: 100%;
}
.container, .row.justify-content-center.align-items-center {
  height: 100%;
  min-height: 100%;
}
body{
	 background: url('../img/bg.jpg') no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}
.boxtext{font-size:2rem;text-align:center;position:relative;color:#000;text-shadow: 0px 2px 2px rgba(255, 255, 255, 0.8); padding:20px 0;display:block;} 
.boxtext .bg{z-index:1;position:absolute;top:0;left:0;display:block;width:100%;height:100%;background:#fff;opacity:0.2;}
.boxtext a{color:#000;text-decoration:none;}
.boxtext a:hover{color:#333;}
.boxtext *{z-index:2;position:relative;}