diff --git a/js_modules/dagit/src/ListComponents.tsx b/js_modules/dagit/src/ListComponents.tsx
--- a/js_modules/dagit/src/ListComponents.tsx
+++ b/js_modules/dagit/src/ListComponents.tsx
@@ -50,6 +50,5 @@
 export const ScrollContainer = styled.div`
   padding: 20px;
   overflow: auto;
-  min-height: 100%;
   width: 100%;
 `;
diff --git a/js_modules/dagit/src/nav/PipelineNav.tsx b/js_modules/dagit/src/nav/PipelineNav.tsx
--- a/js_modules/dagit/src/nav/PipelineNav.tsx
+++ b/js_modules/dagit/src/nav/PipelineNav.tsx
@@ -82,6 +82,7 @@
   height: 45px;
   display: flex;
   flex-direction: row;
+  flex: 0 0 auto;
   align-items: center;
   border-bottom: 1px solid ${Colors.GRAY5};
   background: ${Colors.LIGHT_GRAY3};