diff --git a/src/head.html b/src/head.html
index 0cf8966..d1b3487 100644
--- a/src/head.html
+++ b/src/head.html
@@ -1,4 +1,4 @@
-<header>
+<head>
   <style>
     @import url("https://cdn.jsdelivr.net/gh/aaaakshat/cm-web-fonts@latest/fonts.css");
     * {
@@ -38,4 +38,4 @@
       border-color: #0055d4;
     }
   </style>
-</header>
+</head>
diff --git a/src/index.md b/src/index.md
index 83b7b8d..e78105d 100644
--- a/src/index.md
+++ b/src/index.md
@@ -1,10 +1,11 @@
 # Active Longtermist Emergency Response Team
 
-ALERT is a response team, which will seek to react fast to developing catastrophes.
+ALERT is a response team which will seek to react fast to developing catastrophes.
 
 You can read more about the rationale behind it [here](https://forum.effectivealtruism.org/posts/sgcxDwyD2KL6BHH2C/case-for-emergency-response-teams), and about the latest iteration [here](https://manifund.org/projects/make-alert-happen).
 
-If you want to express your interest in becoming a volunteer, you can fill-in the form below, after which someone will be in touch:
+<h3>Becoming a volunteer</h3>
+If you want to express your interest in becoming a volunteer, you can fill-in the form below, after which a member of our team will be in touch:
 
 <form
   method="post"
diff --git a/src/makefile b/src/makefile
index 950d807..6ae27f5 100644
--- a/src/makefile
+++ b/src/makefile
@@ -1,4 +1,7 @@
 build:
 	rm ../out/index.html
+	echo "<!DOCTYPE html>"  >> ../out/index.html
 	cat head.html >> ../out/index.html
 	markdown index.md >> ../out/index.html
+	echo "</html>" >> ../out/index.html
+
