.editor div {
    display: flex; flex-direction: row;
    flex-wrap: wrap; align-items: center;
    margin-bottom: 5px;
}
.editor button {
    height: 25px; margin: 0 0px; padding: 0 3px;
    border: 1px solid #00000000; border-radius: 2px;
    cursor: pointer;
    background: #ffffff;
}
.editor button > img {
    opacity: .7;
}
.editor button:hover,
.editor button:focus {
    border-color: #000000ff;
}
.editor button:hover > img,
.editor button:focus > img {
    opacity: 1;
}