/* bootstrap@4 */
.input-group.spinner .input-group-text {
    flex-direction: column;
    justify-content: center;
    padding-top: 0;
    padding-bottom: 0;

    .spin-up,
    .spin-down {
        display: flex;
        background: none;
        border: none;
        padding: 0;
        color: #999;
    }

    .spin-up:hover,
    .spin-down:hover,
    .spin-up:focus,
    .spin-down:focus {
        color: #555;
    }
}

/* bootstrap@3 */
.spinner.input-group .input-group-addon {
    .spin-up,
    .spin-down {
        height: 10px;
        width: 10px;
        overflow: hidden;
        display: block;
        text-align: center;
        color: #999;

        &:hover {
            color: #555;
        }

        .fas {
            margin-top: -6px;
            vertical-align: middle;
        }

        .glyphicon {
            font-size: 10px;
            top: -2px;
        }
    }

    a.spin-up,
    a.spin-down {
        text-decoration: none;
    }

    button.spin-up,
    button.spin-down {
        background: none;
        border: none;
        padding: 0;
    }
}

.spinner.input-group.input-group-sm .input-group-addon {
    .spin-up,
    .spin-down {
        height: 8px;

        .fas {
            margin-top: -10px;
        }

        .glyphicon {
            font-size: 8px;
            top: -5px;
        }
    }
}

.spinner.input-group.input-group-lg .input-group-addon {
    .spin-up,
    .spin-down {
        height: 12px;
        width: 12px;

        .fas {
            margin-top: -16px;
        }

        .glyphicon {
            font-size: 12px;
            top: -6px;
        }
    }
}