.small-tools-preview-button {
    display: inline-block;
    width: var(--preview-size);
    height: var(--preview-size);
    background: var(--preview-bg-color);
    border-radius: 50%;
    position: relative;
    text-decoration: none;
    margin: 10px 0;
}

.small-tools-preview-button img {
    width: calc(var(--preview-size) * 0.6);
    height: calc(var(--preview-size) * 0.6);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.small-tools-preview-button:hover {
    background: var(--preview-bg-color);
    filter: brightness(0.9);
}