.phone-group {
    display: flex;
    align-items: stretch;
    width: 100%;
    border: 1px solid #777;
    border-radius: 10px;
    background: #e7f0f8;
    overflow: hidden;
    height: calc(3.0em + .55rem + 2px);
}

.phone-group .phone-code {
    flex: 0 0 auto;
    width: 112px;
    border: none;
    border-right: 1px solid rgba(0, 0, 0, .15);
    background: transparent;
    padding: 0 8px;
    height: 100%;
    border-radius: 0;
    color: #333;
    font-weight: 500;
    font-size: 15px;
}

.phone-group .phone-local {
    flex: 1 1 auto;
    min-width: 0;
    width: auto;
    border: none;
    background: transparent;
    padding-left: 15px;
    height: 100%;
    border-radius: 0;
}

.phone-group .phone-code:focus,
.phone-group .phone-local:focus {
    outline: none;
    box-shadow: none;
}

.phone-group.is-invalid {
    border-color: #dc3545;
}