Removed all mr-5, mb-5 and basis tailwind classes.

Will soon remove tailwind totally.

bookie/src/app/sales/bill-number/bill-number.component.html

@@ -1,7 +1,7 @@
 <mat-dialog-content>
   <form [formGroup]="form">
-    <div class="flex flex-row justify-around content-start items-start sm:max-lg:flex-col">
-      <mat-form-field class="flex-auto basis-[15%] mr-5">
+    <div class="row-container sm:max-lg:flex-col">
+      <mat-form-field class="flex-auto basis-15">
         <mat-label>Regime</mat-label>
         <mat-select formControlName="regime">
           @for (r of regimes; track r) {