.fader {
-webkit-animation:fade 4s infinite;
animation:fade 4s infinite;   
}

@-webkit-keyframes fade
{
0% {color:#343a40;}
50% {color:white;}
100% {color:#343a40;}
}
@keyframes fade {
0% {color:#343a40;}
50% {color:white;}
100% {color:#343a40;}
}

.faderreverse {
-webkit-animation:fadeback 4s infinite;
animation:fadeback 4s infinite;   
}

@-webkit-keyframes fadeback
{
0% {color:white;}
50% {color:#343a40;}
100% {color:white;}
}
@keyframes fadeback {
0% {color:white;}
50% {color:#343a40;}
100% {color:white;}
}