fix

app/design/frontend/Joshine/breeze/Magento_Checkout/templates/onepage.phtml

@@ -11,6 +11,11 @@
     .checkout-index-index{
         font-family: 'Outfit-Regular', sans-serif;
     }
+    .header.content{height:60px;padding-top: 10px;padding-bottom: 10px;}
+    @media(min-width: 640px){
+        .header.content{padding-top: 15px !important;margin-bottom: 0px !important;}
+    }
+
     .opc>li{padding: 0;padding-bottom: 20px;}
     #maincontent{background: #f2f2f2;}
     .page-title-wrapper{display: none;}
@@ -262,6 +267,9 @@
         #opc-sidebar{
             margin-top: 30px;
         }
+        .header.content > a{
+            margin-left: 0 !important;
+        }
     }
 </style>
 <div id="checkout" data-bind="scope:'checkout'" class="checkout-container">