.tooth{
    position: absolute;
    left: 475px;
    transform: rotate(197deg);
    top: 250px;
    animation: abc 1s linear infinite;
}

.tom{
    position: absolute;
    left: 475px;
    top: 120px;
}

@keyframes abc{
    0%{left: 390px;}
    50%{left: 480px;}
    100%{left: 390px;}
}

@media screen and (max-width:500px) and (min-width:400px){
    .tom{
    width: 300px;
    position: absolute;
    left: 75px;
    top: 300px;
    }
    .tooth{
    width: 300px;
    top: 365px;
    }
    @keyframes abc{
        0%{left: -25px;}
        50%{left: 40px;}
        100%{left: -25px;}
    }
}

@media screen and (max-width:400px) and (min-width:300px){
    .tom{
    width: 250px;
    position: absolute;
    left: 40px;
    top: 250px;
    }
    .tooth{
    width: 250px;
    top: 310px;
    }
    @keyframes abc{
        0%{left: -30px;}
        50%{left: 40px;}
        100%{left: -30px;}
    }
}


@media screen and (max-width:900px) and (min-width:800px){
    .tom{
    width: 350px;
    position: absolute;
    left: 220px;
    top: 250px;
    }
    .tooth{
    width: 275px;
    top: 350px;
    }
    @keyframes abc{
        0%{left: 180px;}
        50%{left: 250px;}
        100%{left: 180px;}
    }
}