.temp1{
 font-size: 80px;
 text-align: center;   
    -webkit-animation:togg linear infinite;  /* call our keyframe named fadeIn, use animattion ease-in and repeat it only 1 time */
    -webkit-animation-duration:2s;
}

@-webkit-keyframes togg {     0% { opacity: 0;}
                                50%{ opacity: 1;}
                                100%{opacity: 0; }
                            }