Add 50% of AISL handbook

static/style.css

@@ -183,12 +183,15 @@ h3, .h3-like {
 	height: auto;
 }
 
-
 .double-picture {
 	float: left;
 	width: 50%;
 	height: auto;
 }
+
+.shrink-picture {
+  max-width: 100%;
+}
 /* -------------------------------------------------------------------------- */
 
 .svg-menu-icon .svg-menu-lines ,
@@ -382,6 +385,11 @@ h3, .h3-like {
 	list-style-type: disc;
 }
 
+.text-content ul ul{
+	padding: 1em 0;
+	list-style-type: circle;
+}
+
 .text-content li {
 	padding: 0 0 0.5em;
 	display: list-item;
@@ -391,6 +399,10 @@ h3, .h3-like {
 	font-style: italic;
 }
 
+.table-of-contents a {
+	text-decoration: none;
+}
+
 /* -------------------------------------------------------------------------- */
 
 .main-content {