gistfile1.txt

.github-corner:hover .octo-arm
{
    animation:octocat-wave 560ms ease-in-out
}

@keyframes octocat-wave
{
    0%,100%
    {
        transform:rotate(0)
    }

    20%,60%
    {
        transform:rotate(-25deg)
    }

    40%,80%
    {
        transform:rotate(10deg)
    }
}

@media (max-width:500px)
{
    .github-corner:hover .octo-arm
    {
        animation:none
    }

    .github-corner .octo-arm
    {
        animation:octocat-wave 560ms ease-in-out
    }
}