adding dimensions

Author: 张欧文

starter/03-CSS-Fundamentals/index.html

@@ -47,6 +47,7 @@ <h2>The Basic Language of the Web: HTML</h2>
           alt="HTML code on a screen"
           width="500"
           height="200"
+          class="post-img"
         />
       </header>
 

starter/03-CSS-Fundamentals/style.css

@@ -91,17 +91,24 @@ footer p {
   background-color: #f7f7f7;
   padding: 20px 40px;
   margin-bottom: 60px;
+  height: 80px;
 }
 
 .post-header {
   margin-bottom: 40px;
 }
 
+.post-img {
+  height: auto;
+  width: 100%;
+}
+
 aside {
   background-color: #f7f7f7;
   border-top: 5px solid #1098ad;
   border-bottom: 5px solid #1098ad;
   padding: 50px 0;
+  width: 500px;
 }
 
 /* body {