: inline-block;
    margin-right: 0.5em;
    width: 0.85em;
    height: 1em;
    border-radius: 3px;
    background-color: #ccc;
    cursor: pointer;
}

.dfn-panel .copy-icon .icon {
    width: 100%;
    height: 100%;
    background-color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.dfn-panel .copy-icon .icon::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 1px solid black