.intl-phone-input .tbl-cell:first-child {
    position: relative;
}

    .intl-phone-input .tbl-cell:first-child::before {
        content: "+";
        position: absolute;
        left: 8px;
        line-height: 34px;
        color: #666;
        font-weight: bold;
        pointer-events: none;
        z-index: 2;
    }

/* Make room so typed text doesn't overlap the "+" */
.intl-phone-input input.form-control {
    padding-left: 22px;
}