Update fdz-start and container styles for better layout consistency

Author: maxzeger

mdm-frontend/src/app/legacy/start/views/start.html.tmpl

@@ -1,4 +1,4 @@
-<div class="fdz-cc ma-auto">
+<div class="fdz-cc fdz-start-container">
   <div class="fdz-center">
     <div class="fdz-start flex">
       <div class="fdz-start__header">

mdm-frontend/src/scss/fdz-theme/components/fdz/start-theme.scss

@@ -6,11 +6,19 @@ $card-border-radius: 2px !default;
     align-items: center;
     justify-content: center;
   }
+
+  .fdz-start-container {
+    margin-bottom: auto;
+    margin-top: auto;
+  }
+
   .fdz-start {
     position: relative;
     color: $foreground-1;
     background-color: $background-hue-1;
     border-radius: $card-border-radius;
+    max-width: 100%;
+    min-width: 0;
     box-shadow: 0px 1px 3px 0px rgba(0, 0, 0, 0.2),
     0px 1px 1px 0px rgba(0, 0, 0, 0.14),
     0px 2px 1px -1px rgba(0, 0, 0, 0.12);