assets/custom.css

/* Force all slider input/handle boxes to uniform width */
.dash-slider input,
.rc-slider input,
[class*="slider"] input[type="number"],
[class*="Slider"] input[type="number"] {
    min-width: 64px !important;
    width: 64px !important;
    text-align: center !important;
    box-sizing: border-box !important;
}

.rc-slider-tooltip-inner {
    min-width: 64px !important;
    text-align: center !important;
}