javascript - The element automatically moved upward. The description is not clear. Please look at the picture.

Question

This is the pullpage plug-in used. After the first cycle of scrolling, the arrows have no problem. If you cycle once, the arrows will automatically Moved up

.footer{
    width:0.82rem;
    height: 0.6rem;
    position: fixed;
    bottom:1.5rem;
    left:3.2rem;
    animation:sec1-move 1s linear infinite;
}

@-webkit-keyframes sec1-move {
    from{
        bottom:1.5rem;
    }
    to{
        bottom:1.35rem;
    }
}

Answer 1

You first change the rem unit to px and the corresponding value, and then try again. If there is no problem, it means that the size of the rem reference object has changed.