Added SurfaceEdge documentation

Author: mlau154

aerocaps/geom/surfaces.py

@@ -32,6 +32,16 @@
 
 
 class SurfaceEdge(Enum):
+    """
+    Enum describing the name of each edge of a four-sided surface. The names are defined by the name and value of the
+    parameter that is constant along the edge.
+
+    .. figure:: ../images/cardinal_transparent.*
+        :width: 300
+        :align: center
+
+        Surface edge nomenclature
+    """
     v1 = 0
     v0 = 1
     u1 = 2

docs/source/_static/css/custom.css

@@ -10,3 +10,9 @@ table.max-width-table {
     width: 500px;
     max-width: 100%;
 }
+
+/* Prevent Sphinx from converting transparent backgrounds to white in dark mode */
+html[data-theme="dark"] .bd-content img:not(.only-dark,.only-light) {
+    background-color: var(--bs-body-bg);
+    border-radius: 0.25rem;
+}