.blink_text
{
    animation:1s blinker linear infinite;
    -webkit-animation:1s blinker linear infinite;
    -moz-animation:1s blinker linear infinite;
}

@-moz-keyframes blinker
{  
    0% { opacity: 1.0; }
    50% { opacity: 0.0; }
    100% { opacity: 1.0; }
}

@-webkit-keyframes blinker
{  
    0% { opacity: 1.0; }
    50% { opacity: 0.0; }
    100% { opacity: 1.0; }
}

@keyframes blinker
{  
    0% { opacity: 1.0; }
    50% { opacity: 0.0; }
    100% { opacity: 1.0; }
 }

 .center {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
  }