.rich-editor .rich-editor-tools-button {
    float: left;
    width: 30px;
    height: 30px;
    line-height: 30px;
    box-sizing: border-box;
    color: #666666;
    cursor: pointer;
    margin-right: 12px;
    font-size: 18px;
    text-align: center;
    border: 1px solid transparent;
    border-radius: 2px;
    &.rich-editor-tools-button-active {
        background-color: #FFFFFF;
        border-color: #E7EAF1;
    }
}