diff --git a/week-1/1-parent-child/index.html b/week-1/1-parent-child/index.html
index 458a4cb..3c8abf1 100644
--- a/week-1/1-parent-child/index.html
+++ b/week-1/1-parent-child/index.html
@@ -27,6 +27,7 @@
           <p class="message__content">
             I can meet on Tuesday and Wednesday after 4.
           </p>
+          <span class="message__time">7:15pm</span>
         </div>
       </div>
     </div>
diff --git a/week-1/2-html-attributes/index.html b/week-1/2-html-attributes/index.html
index dc861fa..eaea938 100644
--- a/week-1/2-html-attributes/index.html
+++ b/week-1/2-html-attributes/index.html
@@ -23,14 +23,14 @@
         <div class="message">
           <div class="message__author">Luke</div>
           <p class="message__content">
-            Let's meet at the iCafe in Merchant City. https://goo.gl/maps/aza4h9nUBhn
+            Let's meet at the <a href=" https://goo.gl/maps/aza4h9nUBhn">iCafe</a> in Merchant City. https://goo.gl/maps/aza4h9nUBhn
           </p>
           <span class="message__time">7:35pm</span>
         </div>
         <div class="message">
           <div class="message__author">Won</div>
           <p class="message__content">
-            Ok! https://media.giphy.com/media/l41K4KlVE8dgozf8I/giphy.gif
+            Ok! <img src="https://media.giphy.com/media/l41K4KlVE8dgozf8I/giphy.gif" />
           </p>
           <span class="message__time">7:38pm</span>
         </div>
diff --git a/week-1/2-html-attributes/readme.md b/week-1/2-html-attributes/readme.md
index 73c51cc..937e199 100644
--- a/week-1/2-html-attributes/readme.md
+++ b/week-1/2-html-attributes/readme.md
@@ -1,4 +1,4 @@
-# HTML Attributes
+g# HTML Attributes
 
 Luke has sent a map to iCafe. Using HTML attributes, we can turn this into a link that we can click on. Won has responded with a funny gif. Wouldn't it be nice if we showed it as an image in the message?
 
diff --git a/week-1/3-semantic-html/index.html b/week-1/3-semantic-html/index.html
index 3640dea..7a3891f 100644
--- a/week-1/3-semantic-html/index.html
+++ b/week-1/3-semantic-html/index.html
@@ -12,28 +12,28 @@
 
   <body>
     <div class="site-wrapper">
-      <div class="site-header">
+      <header class="site-header">
         <div class="site-header__title">Messages</div>
-      </div>
-      <div class="messages">
-        <div class="message">
+      </header>
+      <div class="messages" role="main">
+        <article class="message">
           <div class="message__author">Won</div>
           <p class="message__content">Where should we meet later?</p>
-          <span class="message__time">Mar 25, 2018 7:25pm</span>
-        </div>
+          <time class="message__time" datetime="2018-03-25 19:25">Mar 25, 2018 7:25pm</time>
+        </article>
         <div class="message">
           <div class="message__author">Luke</div>
           <p class="message__content">
             Let's meet at the iCafe in Merchant City. https://goo.gl/maps/aza4h9nUBhn
           </p>
-          <span class="message__time">Mar 25, 2018 7:35pm</span>
+          <time class="message__time" datetime="2018-03-25 19:35">Mar 25, 2018 7:35pm</time>
         </div>
         <div class="message">
           <div class="message__author">Won</div>
           <p class="message__content">
             Ok! https://media.giphy.com/media/l41K4KlVE8dgozf8I/giphy.gif
           </p>
-          <span class="message__time">Mar 25, 2018 7:38pm</span>
+          <time class="message__time" datetime="2018-03-25 19:38">Mar 25, 2018 7:38pm</time>
         </div>
       </div>
       <div id="result" class="result"></div>
diff --git a/week-1/4-links-scripts/index.html b/week-1/4-links-scripts/index.html
index 303c7fb..44b2df4 100644
--- a/week-1/4-links-scripts/index.html
+++ b/week-1/4-links-scripts/index.html
@@ -2,6 +2,8 @@
 <html lang="en">
   <head>
     <meta charset="utf-8" />
+    <link rel="stylesheet" href="./css/missing-styles.css" />
+
     <title>4. Adding Links and Scripts - HTML, CSS and Git Exercises</title>
     <meta name="viewport" content="width=device-width, initial-scale=1" />
   </head>
@@ -34,4 +36,6 @@
       </div>
     </div>
   </body>
+  <script src="./js/convertUrls.js" type="text/javascript"></script>
+
 </html>
diff --git a/week-1/5-css-selectors/message-backgrounds.css b/week-1/5-css-selectors/message-backgrounds.css
index ffe4833..11ddd7b 100644
--- a/week-1/5-css-selectors/message-backgrounds.css
+++ b/week-1/5-css-selectors/message-backgrounds.css
@@ -1 +1,13 @@
 /* Add your CSS code below */
+#first-message {
+    background-color: red;
+  }
+  
+  article {
+    background-color: cadetblue;
+  }
+  
+  .message--latest {
+    background-color: yellow;
+  }
+  
\ No newline at end of file
diff --git a/week-1/6-css-properties/styles.css b/week-1/6-css-properties/styles.css
index ffe4833..8c9a8c2 100644
--- a/week-1/6-css-properties/styles.css
+++ b/week-1/6-css-properties/styles.css
@@ -1 +1,23 @@
 /* Add your CSS code below */
+a {
+    color: red;
+    font-weight: bold;
+    text-decoration: none;
+  }
+  
+  .message__time {
+    font-size: 0.9rem;
+  }
+  
+  .message--unread {
+    border-left: 2px solid blue;
+  }
+  
+  .message:has(.message__time--old) {
+    opacity: 0.5;
+  }
+  
+  .message__content {
+    line-height: 3.5em;
+  }
+  
\ No newline at end of file
diff --git a/week-1/7-css-box/styles.css b/week-1/7-css-box/styles.css
index 013b94f..3cd0ef4 100644
--- a/week-1/7-css-box/styles.css
+++ b/week-1/7-css-box/styles.css
@@ -4,3 +4,6 @@
   border-radius: 4px;
   background: #fff;
 }
+.country {
+  padding-left: 50px;
+}
diff --git a/week-1/8-advanced-selectors/styles.css b/week-1/8-advanced-selectors/styles.css
index d35c3c3..f04d1a5 100644
--- a/week-1/8-advanced-selectors/styles.css
+++ b/week-1/8-advanced-selectors/styles.css
@@ -1 +1,15 @@
 /* Try different box model properties below */
+.site-header > p {
+    color: white;
+    margin-bottom: 0px;
+  }
+  
+  .site-footer > p {
+    font-size: 12px;
+    text-align: center;
+  }
+  
+  .messages div:last-child {
+    box-shadow: 4px 4px 0 #dba944;
+  }
+  
\ No newline at end of file
diff --git a/week-2/10-media-queries/columns.css b/week-2/10-media-queries/columns.css
index 43e80d2..559c9cb 100644
--- a/week-2/10-media-queries/columns.css
+++ b/week-2/10-media-queries/columns.css
@@ -1 +1,13 @@
 /* Add your own CSS code below */
+@media screen and (min-width: 768px) {
+    .countries {
+      columns: 2;
+    }
+  }
+  
+  @media screen and (min-width: 1200px) {
+    .countries {
+      columns: 3;
+    }
+  }
+  
\ No newline at end of file
diff --git a/week-2/11-flexbox/flexbox.css b/week-2/11-flexbox/flexbox.css
index 43e80d2..5dc5432 100644
--- a/week-2/11-flexbox/flexbox.css
+++ b/week-2/11-flexbox/flexbox.css
@@ -1 +1,16 @@
 /* Add your own CSS code below */
+.countries--first {
+    display: flex;
+    flex-direction: row-reverse;
+  }
+  
+  .countries--second {
+    display: flex;
+    flex-direction: column;
+  }
+  
+  .countries--third {
+    display: flex;
+    flex-direction: column-reverse;
+  }
+  
\ No newline at end of file
diff --git a/week-2/12-justify-content/flexbox.css b/week-2/12-justify-content/flexbox.css
index 3c4c7ff..7924206 100644
--- a/week-2/12-justify-content/flexbox.css
+++ b/week-2/12-justify-content/flexbox.css
@@ -7,3 +7,20 @@
 }
 
 /* Add your own CSS code below */
+.countries--first {
+  justify-content: right;
+}
+
+.countries--second {
+  justify-content: space-between;
+}
+
+.countries--third {
+  justify-content: end;
+  flex-direction: column;
+}
+
+.countries--fourth {
+  justify-content: space-between;
+  flex-direction: column-reverse;
+}
diff --git a/week-2/13-align-items/flexbox.css b/week-2/13-align-items/flexbox.css
index 3675a0d..593a7b8 100644
--- a/week-2/13-align-items/flexbox.css
+++ b/week-2/13-align-items/flexbox.css
@@ -2,3 +2,24 @@
   display: flex;
 }
 /* Add your own CSS code below */
+.countries--first {
+  flex-direction: row;
+  align-items: center;
+}
+
+.countries--second {
+  flex-direction: row-reverse;
+  align-items: flex-end;
+}
+
+.countries--third {
+  flex-direction: column;
+  align-items: flex-end;
+  justify-content: start;
+}
+
+.countries--fourth {
+  flex-direction: column-reverse;
+  align-items: center;
+  justify-content: end;
+}
\ No newline at end of file
diff --git a/week-2/14-order/flexbox.css b/week-2/14-order/flexbox.css
index ed621b7..6e50cb5 100644
--- a/week-2/14-order/flexbox.css
+++ b/week-2/14-order/flexbox.css
@@ -3,3 +3,23 @@
 }
 
 /* Add your own CSS code below */
+.countries--first :nth-child(1) {
+  order: 3;
+}
+
+.countries--second :nth-child(1) {
+  order: 3;
+}
+
+.countries--third :nth-child(1) {
+  order: 4;
+}
+.countries--third :nth-child(2) {
+  order: 3;
+}
+.countries--third :nth-child(3) {
+  order: 2;
+}
+.countries--third :nth-child(4) {
+  order: 1;
+}
diff --git a/week-2/15-align-self/flexbox.css b/week-2/15-align-self/flexbox.css
index ed621b7..2050a63 100644
--- a/week-2/15-align-self/flexbox.css
+++ b/week-2/15-align-self/flexbox.css
@@ -3,3 +3,32 @@
 }
 
 /* Add your own CSS code below */
+.countries--first .country--ethiopia {
+  align-self: flex-end;
+}
+.countries--second {
+  align-items: center;
+}
+
+.countries--second .country--ethiopia {
+  align-self: flex-end;
+}
+
+.countries--third {
+  flex-direction: row;
+  align-items: flex-end;
+}
+.countries--third .country--brazil,
+.countries--third .country--uganda {
+  align-self: flex-start;
+}
+
+.countries--fourth {
+  flex-direction: column;
+  align-items: flex-start;
+}
+
+.countries--third,
+.country--uganda {
+  align-self: center;
+}
diff --git a/week-2/16-more-flexbox/flexbox.css b/week-2/16-more-flexbox/flexbox.css
index ed621b7..9ad93b2 100644
--- a/week-2/16-more-flexbox/flexbox.css
+++ b/week-2/16-more-flexbox/flexbox.css
@@ -3,3 +3,48 @@
 }
 
 /* Add your own CSS code below */
+.countries--first {
+  align-items: flex-end;
+  justify-content: end;
+}
+
+.countries--second {
+  flex-direction: row-reverse;
+  align-items: flex-end;
+  justify-content: end;
+}
+
+.countries--third {
+  align-items: flex-start;
+  justify-content: end;
+}
+
+.countries--third .country--brazil {
+  align-self: flex-end;
+}
+
+.countries--fourth {
+  flex-direction: column;
+  align-items: flex-end;
+  justify-content: center;
+}
+
+.countries--fourth .country--ethiopia,
+.countries--fourth .country--laos {
+  align-self: center;
+}
+
+.countries--fifth {
+  flex-direction: column-reverse;
+  align-items: flex-end;
+  justify-content: space-around;
+}
+
+.countries--fifth .country--uganda {
+  align-self: center;
+  order: 4;
+}
+
+.countries--fifth .country--laos {
+  order: 5;
+}
\ No newline at end of file
diff --git a/week-2/17-nav-menu/styles.css b/week-2/17-nav-menu/styles.css
index f04f4c7..75cf784 100644
--- a/week-2/17-nav-menu/styles.css
+++ b/week-2/17-nav-menu/styles.css
@@ -1 +1,24 @@
 /* Write your media queries and flexbox CSS below */
+@media screen and (min-width: 480px) {
+    .site-header__nav {
+      flex-direction: row;
+      display: flex;
+    }
+  }
+  
+  @media screen and (min-width: 700px) {
+    .site-header {
+      flex-direction: row;
+      display: flex;
+      justify-content: flex-start;
+    }
+  }
+  
+  @media screen and (min-width: 992px) {
+    .site-header__checkout {
+      flex-direction: row;
+      display: flex;
+      justify-content: center;
+    }
+  }
+  
\ No newline at end of file
diff --git a/week-2/18-git-merge/styles.css b/week-2/18-git-merge/styles.css
index 0051cdb..af46a4f 100644
--- a/week-2/18-git-merge/styles.css
+++ b/week-2/18-git-merge/styles.css
@@ -1,6 +1,6 @@
 /* Add your own CSS code below */
 .link {
-  color: #4491db;
+  color: orangered;
   font-weight: 700;
   text-decoration: none;
 }
