Keyframe Animation

here is the relevent css
#snoopy{
    animation-name: walking;
    animation-duration: 9s;
    animation-fill-mode: forwards;
    animation-iteration-count: infinite;
    }
    

    

    @keyframes walking{
    0%{
    transform: translateX(0px);
    }
    48%{
    transform: translateX(600px);
    }
    50%{
    transform: rotateY(180deg) translateX(-600px);
    }
    98%{
    transform: translateX(0px) rotateY(180deg);
    }
    100%{
    transform: translateX(0px);
    }
    }