chore: styles improvements for image aspect ratio and line height

assets/css/baseof.css

@@ -42,7 +42,7 @@
 body {
   font-family: 'Open Sans', sans-serif;
   font-size: 16px;
-  line-height: normal;
+  line-height: 1.5;
   -webkit-font-smoothing: antialiased;
 
   background-color: var(--background);

assets/css/single.css

@@ -33,6 +33,12 @@ main #content .highlight pre {
   padding: 0rem;
 }
 
+main #content img {
+  width: 100%;
+  aspect-ratio: 4 / 3;
+  object-fit: cover;
+}
+
 @media only screen and (max-width: 1024px) {
   main #container {
     display: block;