updates to landing page

templates/main.html

@@ -76,16 +76,13 @@ This module can be used to estimate the fraction of the total pool or solvent co
 &#x2022; <a href="/color3"> Color additives (v3) </a>
 
 <p>
-An updated version of the color additive module that contains additional features and more robust parameterization of the underlying
-    transport model used to estimate patient exposure.  Updated to address additional polymers.
+An updated version of the color additive module that can address additional polymers using a machine learning method.
 </p>
 
 &#x2022; <a href="/exposure3"> Bulk chemicals (excluding color additives) (v3) </a>
 
 <p>
-This module can be used similarly to the color additive tool, but can be applied to any non-color additive bulk additive or impurity (surface impurities / manufacturing
-    residuals are excluded) that is present in a polymeric device component provided that the user can justify the chemical is a bulk species and that
-    the total amount of the chemical is known, e.g. from a certificate of analysis. Updated to address additional polymers.
+An updated version of the bulk chemicals module that can address additional polymers using a machine learning method.
 </p>
 
 <!--<h2> Future modules <button type=button class="Info_btn" data-toggle="modal" data-target="#FutureModal">&#9432;</button> </h2>