.mce-colorbutton {
    display: none!important;
}

.di-smallest {
    font-size:14px;
    line-height:18px;
}

.di-smaller {
    font-size:16px;
    line-height:20px;
}

.di-big {
    font-size:20px;
    line-height:24px;
}

.di-bigger {
    font-size:22px;
    line-height:26px;
}

.di-biggest {
    font-size:24px;
    line-height:28px;
}