div.del-value-confirm div {
    padding: 2px;
}

div.del-value-confirm {
    /*z-index: 99;*/
    background: #000;
    color: #fff;
    position:absolute;
    bottom:2em;
    width:100%;
    border-radius:3px;
}

    div.del-value-confirm div:first-child {
        float: left;
        font-weight: bold;
    }

    div.del-value-confirm div:last-child {
        overflow: hidden;
    }

    div.del-value-confirm a.button {
        width: calc(50% - 2em );
        opacity: 1!important;
        margin: 0 0.5em;
        /*z-index: 99;*/
    }