#preview {
    max-width: 100px;
    max-height: 100px;
    min-width: 45px;
    min-height: 45px;
    justify-self: end;
    height: 100%;
    /*position: absolute;
    top: 40%;
    left: 34%;*/
}

.triangle {
    stroke: #d3291e;
    animation-fill-mode: forwards;/* アニメーション後の状態を維持 */
}