modal_add.css

.hint {
    font-size: 20px;
    /*height: 15%;*/
    margin-top: 2%;
    margin-left: 15%;
    margin-right: 15%;
    width: 70%;
}

.confirm {
    color: #fff;
    float: right;
    font-size: 20px;
    background: transparent;
    height: 10%;
    margin-top: 6%;
}

.confirm:hover, .confirm:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}

.cross {
    color: #fff;
    float: right;
    font-size: 30px;
}

.cross:hover, .cross:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}