UI: Style adjustments to issues list

* Hide branches
* Adjust padding
* Minor alignment tweaks

templates/custom/header.tmpl

@@ -24,6 +24,8 @@
 
     --border-radius: .33rem;
 
+    --color-border: var(--color-secondary);
+
     /* Transitions. */
     --transition-speed: 150ms;
   }
@@ -182,6 +184,31 @@
     overflow: hidden;
   }
 
+  .issue.list {
+    border-radius: var(--border-radius);
+    border: thin solid var(--color-border);
+  }
+
+  .issue.list > .item {
+    padding: var(--spacer-3) var(--spacer) !important;
+  }
+
+  /* Hide branches from PR list. */
+  .issue.list .branches {
+    display: none !important;
+  }
+
+  .issue.list a.project,
+  .issue.list a.milestone {
+    margin-inline: var(--spacer-2) !important;
+  }
+
+  .issue.list a.project svg {
+    margin-right: var(--spacer-2) !important;
+    position: relative;
+    top: 2px;
+  }
+
   /* Footer. */
   footer {
     color: var(--color-footer-text);