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

Will soon remove tailwind totally.

bookie/src/app/settings/settings.component.html

@@ -12,7 +12,7 @@
     <mat-card>
       <mat-card-content>
         <form [formGroup]="maintenanceForm" class="flex flex-col">
-          <div class="flex flex-row justify-around content-start items-start">
+          <div class="row-container">
             <mat-form-field class="flex-auto">
               <mat-label>Start Date</mat-label>
               <input