ИНН

HTML

ИНН<span>1234567890123456789012345678901234567890</span>

CSS

span {
  border: 1px black solid;
  margin:.5em;
  padding:0.125em 0 0 .25em;
	letter-spacing:.65em;
	font-family:"Courier New", Courier, monospace;
  font-size: 1em;
background: -moz-linear-gradient(left, rgba(252,252,252,0) 0%, rgba(255,255,255,0) 95%, rgba(0,0,0,1) 96%, rgba(0,0,0,1) 100%);
background: -webkit-gradient(left top, right top, color-stop(0%, rgba(252,252,252,0)), color-stop(95%, rgba(255,255,255,1)), color-stop(96%, rgba(0,0,0,1)), color-stop(100%, rgba(0,0,0,1)));
background: -webkit-linear-gradient(left, rgba(252,252,252,0) 0%, rgba(255,255,255,0) 95%, rgba(0,0,01) 96%, rgba(0,0,0,1) 100%);
background: -o-linear-gradient(left, rgba(252,252,252,0) 0%, rgba(255,255,255,0) 95%, rgba(0,0,0,1) 96%, rgba(0,0,0,1) 100%);
background: -ms-linear-gradient(left, rgba(252,252,252,0) 0%, rgba(255,255,255,0) 95%, rgba(0,0,0,1) 96%, rgba(0,0,0,1) 100%);
background: linear-gradient(to right, rgba(252,252,252,0) 0%, rgba(255,255,255,0) 95%, rgba(0,0,0,1) 96%, rgba(0,0,0,1) 100%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#fcfcfc', endColorstr='#000000', GradientType=1 );
  background-size:1.25em 1em;
	background-repeat:repeat;
}
span:after {
  content:' ';
  border: 1px white solid;
  position:absolute;
  background:white;
  width:.2em;
  height:1.25em;
  margin:-.125em -.25em;
}