AutoHotkey: Resize gui form of an AutoHotkey script

Hello experts,

I have the following AutoHotkey script:

;========================================
;Gui: Calculate Distance Speed Time (DST)
;========================================




<^>!d:: ; hotkey is AltGr+D - make it whatever you want
DSTtitle:="Distance Speed Time Calculator"
If (WinExist(DSTtitle))
{
  Gui,+OwnDialogs
  MsgBox,4112,Error,%DSTtitle% dialog is already open
  Return
}
Gui,New,,%DSTtitle%
Gui,Font,s12 w1000
Gui,Add,Text,,Enter two of the three items below and click the Calculate button
Gui,Add,Text,,Distance (KM):
Gui,Add,Edit,vDistance x+10 yp
Gui,Add,Text,xm,Speed (KM/Hour):
Gui,Add,Edit,vSpeed x+10 yp
Gui,Add,Text,xm,Time (Minutes):
Gui,Add,Edit,vTime x+10 yp
Gui,Add,Text
Gui,Add,Button,xm gButtonCalculateDST Default,&Calculate
Gui,Add,Button,x+10 gButtonExitDST,E&xit
Gui,Show
Return


ButtonCalculateDST:
Gui,+OwnDialogs
Gui,Submit,NoHide
If (Distance="")
{
  ; calculate Distance from Speed and Time
  Time:=Time/60 ; convert minutes to hours
  Distance:=Format("{:.2f}",Speed*Time)
  GuiControl,,Distance,%Distance%
  Return
}
Else
If (Speed="")
{
  ; calculate Speed from Distance and Time
  Time:=Time/60 ; convert minutes to hours
  Speed:=Format("{:.2f}",Distance/Time)
  GuiControl,,Speed,%Speed%
  Return
}
Else
If (Time="")
{
  ; calculate Time from Distance and Speed
  Time:=Format("{:.2f}",60*(Distance/Speed))
  GuiControl,,Time,%Time%
  Return
}
MsgBox,4144,Error,One of the three values must be blank/empty/null
Return


ButtonExitDST:
Gui,Destroy
Return


;====================================
;Gui: Calculate BMI
;====================================


<^>!):: ; hotkey is AltGr+B - make it whatever you want
BMItitle:="Body Mass Index"
If (WinExist(BMItitle))
{
  Gui,+OwnDialogs
  MsgBox,4112,Error,%BMItitle% dialog is already open
  Return
}
Gui,New,,%BMItitle%
Gui,Add,Text,,Enter your weight in kilograms:
Gui,Add,Edit,vWeight x+10 yp
Gui,Add,Text,xm,Enter your height in meters:
Gui,Add,Edit,vHeight x+10 yp
Gui,Add,Text
Gui,Add,Text,xm,Your BMI is:
Gui,Add,Edit,vBMI x+10 yp
Gui,Add,Text
Gui,Add,Button,xm gButtonCalculateBMI Default,&Calculate
Gui,Add,Button,x+10 gButtonExitBMI,E&xit
Gui,Show
Return


ButtonCalculateBMI:
Gui,+OwnDialogs
Gui,Submit,NoHide
If (Weight="") or (Height="")
{
  MsgBox,4144,Error,You must enter Weight and Height
  Return
}
If Weight is not number
{
  MsgBox,4144,Error,Weight must be a number
  Return
}
If Height is not number
{
  MsgBox,4144,Error,Height must be a number
  Return
}
If (Weight<=0) or (Height<=0)
{
  MsgBox,4144,Error,Weight and Height must both be positive numbers
  Return
}
BMI:=Format("{:.2f}",(Weight/(Height*Height)))
GuiControl,,BMI,%BMI%
Return


ButtonExitBMI:
Gui,Destroy
Return

Select allOpen in new window

The first AutoHotkey script has a better size letter and instructions are bold.

I was wondering how can I have the same for the second script.

Thank you for your help.