@keyframes kca
{
    0% {
        left: -30%;
    }
    100% {
        left: 115%;
    }
}

#makethistagmove {
    position: relative;
    background-color: transparent;
    animation-name: kca;
    animation-duration: 15s;
    animation-iteration-count: infinite;
    animation-direction: reverse;
}