#animation_area {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 120px;
    /* border: 1px solid red; */
    /* background-image: url(https://picsum.photos/1600/200); */
    overflow: hidden;
}
#animation_area p {
    position: absolute;
    border-radius: 50%;
    width: 100px;
    height: 100px;
    /* background-color: aqua; */
    transition: all 0.5s;
    animation: ani 5s linear;
    animation-fill-mode: forwards;
    border: 2px solid rgba(255, 255, 255, 0.9);
}
@keyframes ani {
    0%{}
    100%{top:-150px;opacity: 0.1;transform: scale(0.3);}
}