Fix title styles.

frontend/src/app/components/block/block.component.html

@@ -162,7 +162,7 @@
     </div>
 
     <div #blockTxTitle id="block-tx-title" class="block-tx-title">
-      <h2 class="float-left">
+      <h2>
         <ng-container *ngTemplateOutlet="block.tx_count === 1 ? transactionsSingular : transactionsPlural; context: {$implicit: block.tx_count | number}"></ng-container>
         <ng-template #transactionsSingular let-i i18n="shared.transaction-count.singular">{{ i }} transaction</ng-template>
         <ng-template #transactionsPlural let-i i18n="shared.transaction-count.plural">{{ i }} transactions</ng-template>