Refactor CSS

static/style.css

@@ -1,8 +1,8 @@
-.container {
+main {
     display: flex;
     flex-flow: row wrap;
     justify-content: space-around;
-    gap: 15px;
+    gap: 1em;
     align-items: flex-start;
 }
 
@@ -15,16 +15,13 @@ a {
     color: black;
 }
 
-img {
-    max-width: 600px;
-}
-
 .dataframe {
     border-collapse: collapse;
     font-size: 0.9em;
     font-family: sans-serif;
     min-width: 400px;
     box-shadow: 0 0 20px rgba(0, 0, 0, 0.15);
+    flex-grow: 1;
 }
 
 .dataframe thead tr {