$border-color: #E7EAF1;

.rich-editor .rich-editor-tools-colors {
    position: relative;
    display: inline-block;
    width: 30px;
    border: 1px solid $border-color;
    padding: 5px;
    line-height: 18px;
    background-color: #FFFFFF;
    .rich-editor-tools-colors-active {
        cursor: pointer;
        color: #333333;
        font-size: 18px;
        text-align: center;
    }
    .rich-editor-tools-colors-select {
        display: none;
        position: absolute;
        z-index: 99;
        width: 182px;
        border: 1px solid $border-color;
        top: 28px;
        left: -1px;
        background-color: #FFFFFF;
        li {
            cursor: pointer;
            width: 30px;
            height: 30px;
            padding: 6px;
            float: left;
            border-right: 1px solid $border-color;
            div {
                font-size: 0;
                height: 100%;
            }
            &:nth-child(6n) {
                border-right: 0;
            }
        }
    }
    &:hover {
        border: 1px solid $border-color;
        .rich-editor-tools-colors-select {
            display: block;
        }
    }
}