diff --git a/tasks/1.html b/tasks/1.html
index 62be4d7..b6e577e 100755
--- a/tasks/1.html
+++ b/tasks/1.html
@@ -14,6 +14,16 @@ <h1 class="global-heading">&nbsp;</h1>
             <section class="global-result">
                 <style>
                     /* ваш код здесь... */
+                    div:first-child,
+                    aside:last-child {
+                        background: #6697FF;
+                    }
+                    .c1{
+                        background: #FF6598;
+                    }
+                    #id{
+                        background: #98FF66;
+                    }
                 </style>
 
                 <article class="global-scope">
diff --git a/tasks/10.html b/tasks/10.html
index d4510fa..0c8b224 100755
--- a/tasks/10.html
+++ b/tasks/10.html
@@ -13,6 +13,12 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                .title::first-letter{
+                    color:#FF6698;
+                }
+                .description::first-line{
+                    color:#6898FF;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/11.html b/tasks/11.html
index 7cbdc68..2683212 100755
--- a/tasks/11.html
+++ b/tasks/11.html
@@ -13,6 +13,15 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                [value^="invalid"]{ 
+                    border: 3px solid #FF6698;
+                }
+                [value*="@"]{
+                    border: 3px solid #98FF66;
+                }
+                [value^="invalid"]:focus{
+                    border: 3px solid #6395FF;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/12.html b/tasks/12.html
index df47ce3..f6a13d6 100755
--- a/tasks/12.html
+++ b/tasks/12.html
@@ -13,6 +13,14 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                div{
+                    background: #FFFF65
+                }
+                div:nth-child(odd):not(:nth-of-type(5)){
+                    background: #FFB365;
+                }
+                
+                
             </style>
 
             <section class="global-result">
diff --git a/tasks/13.html b/tasks/13.html
index d9e3f6e..6a007e8 100755
--- a/tasks/13.html
+++ b/tasks/13.html
@@ -13,6 +13,9 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                article>div:nth-child(4n+1) div:first-child{
+                    background: gray;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/14.html b/tasks/14.html
index 980a2a5..e1f9b91 100755
--- a/tasks/14.html
+++ b/tasks/14.html
@@ -13,6 +13,9 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                li::before{
+                    content: "+ ";
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/15.html b/tasks/15.html
index 705eeee..9d0b072 100755
--- a/tasks/15.html
+++ b/tasks/15.html
@@ -13,6 +13,9 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                [href$="zip"]::after{
+                  content: " \2193";
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/16.html b/tasks/16.html
index eb614cc..7820a5a 100755
--- a/tasks/16.html
+++ b/tasks/16.html
@@ -13,6 +13,18 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                div:first-child{
+                    background: #FF6698;
+                }
+                .c1{
+                    background: #6798FF !important;
+                }
+                #id1{
+                    background: #FFB365 !important;
+                }
+                .c7{
+                    background: #FFFF65 !important;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/17.html b/tasks/17.html
index c973a48..9accf1f 100755
--- a/tasks/17.html
+++ b/tasks/17.html
@@ -13,6 +13,9 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                input:checked ~ input:not(:checked){
+                    outline: 1px solid #ff6698;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/18.html b/tasks/18.html
index 2634da4..f3c2d3c 100755
--- a/tasks/18.html
+++ b/tasks/18.html
@@ -13,6 +13,9 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                article:hover div:not(:hover){
+                    opacity: 0.3;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/19.html b/tasks/19.html
index 3af53a6..7d2814a 100755
--- a/tasks/19.html
+++ b/tasks/19.html
@@ -13,6 +13,24 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                div{
+                    background: white;
+                }
+                article>div{
+                    background: #FFB365;
+                }
+                div:nth-of-type(1)>div:last-child{
+                    background: #98FF66;
+                }
+                div:nth-of-type(2)>div:nth-of-type(even){
+                    background: #FF6698;
+                }
+                div:nth-of-type(3)>div:nth-of-type(odd){
+                    background: #6798FF;
+                }
+                div:nth-of-type(4)>div:first-child{
+                    background: #FFFF65;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/2.html b/tasks/2.html
index 27ecc28..0667167 100755
--- a/tasks/2.html
+++ b/tasks/2.html
@@ -13,6 +13,17 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                .c1 {
+                    background: #FF6598;
+                    border: 2px solid #000;
+                }
+                .c1.c2 {
+                    background: #6697FF;
+                    border: 2px solid #000;
+                }
+                .c2{
+                    background: #FFB365;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/20.html b/tasks/20.html
index 07a5869..3f3aa4c 100755
--- a/tasks/20.html
+++ b/tasks/20.html
@@ -13,6 +13,12 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                div div:nth-last-child(n+3){
+                    background: #FF6698;
+                }
+                div div:nth-last-child(n+3)~div{
+                    background: #FF6698;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/3.html b/tasks/3.html
index c652179..c50fd6f 100755
--- a/tasks/3.html
+++ b/tasks/3.html
@@ -13,6 +13,12 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+               article>div{
+                border: 2px solid #000;
+               }
+               div div{
+                   background: #6697FF;
+               }
             </style>
 
             <section class="global-result">
diff --git a/tasks/4.html b/tasks/4.html
index b367da7..0463793 100755
--- a/tasks/4.html
+++ b/tasks/4.html
@@ -13,6 +13,9 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                article:not(:first-of-type){
+                    border-top: 1px solid #000;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/5.html b/tasks/5.html
index 98f61c4..fac813b 100755
--- a/tasks/5.html
+++ b/tasks/5.html
@@ -1,38 +1,49 @@
 <!DOCTYPE html>
 <html>
-    <head>
-        <title>CSS-селекторы</title>
-        <meta charset="utf-8">
-
-        <link rel="stylesheet" type="text/css" href="../global.css">
-    </head>
-    <body>
-        <h1 class="global-heading">&nbsp;</h1>
-        <p>Решите задачу, используя <code>background: &lt;color&gt;</code> и <code>color: &lt;color&gt;</code></p>
-
-        <main class="global-results">
-            <style>
-                /* ваш код здесь... */
-            </style>
-
-            <section class="global-result">
-                <article class="global-scope">
-                    <label for="checkbox">Black Theme</label>
-                    <input id="checkbox" type="checkbox"><br>
-                    <div class="tab">Text</div>
-                </article>
-            </section>
-
-            <section class="global-result">
-                <img class="global-goal">
-            </section>
-        </main>
-
-        <nav class="global-nav">
-            <a class="global-prev">Предыдущее</a>
-            <a class="global-next">Следующее</a>
-        </nav>
-
-        <script src="../global.js"></script>
-    </body>
-</html>
+
+<head>
+    <title>CSS-селекторы</title>
+    <meta charset="utf-8">
+
+    <link rel="stylesheet" type="text/css" href="../global.css">
+</head>
+
+<body>
+    <h1 class="global-heading">&nbsp;</h1>
+    <p>Решите задачу, используя <code>background: &lt;color&gt;</code> и <code>color: &lt;color&gt;</code></p>
+
+    <main class="global-results">
+        <style>
+            /* ваш код здесь... */
+            .tab {
+                color: black;
+                background: white;
+            }
+            #checkbox:checked+*+div.tab {
+                color: white;
+                background: black;
+            }
+        </style>
+
+        <section class="global-result">
+            <article class="global-scope">
+                <label for="checkbox">Black Theme</label>
+                <input id="checkbox" type="checkbox"><br>
+                <div class="tab">Text</div>
+            </article>
+        </section>
+
+        <section class="global-result">
+            <img class="global-goal">
+        </section>
+    </main>
+
+    <nav class="global-nav">
+        <a class="global-prev">Предыдущее</a>
+        <a class="global-next">Следующее</a>
+    </nav>
+
+    <script src="../global.js"></script>
+</body>
+
+</html>
\ No newline at end of file
diff --git a/tasks/6.html b/tasks/6.html
index 059db07..a133fd7 100755
--- a/tasks/6.html
+++ b/tasks/6.html
@@ -13,6 +13,9 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                [href*="yandex.ru"]{
+                    color: #FF77A3;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/7.html b/tasks/7.html
index c3e1e50..109317f 100755
--- a/tasks/7.html
+++ b/tasks/7.html
@@ -13,6 +13,16 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                div:first-child ~ div:not(:last-child){
+                    opacity: 0.3;
+                }
+               /* можно сделать проще:
+               div:nth-child(2){
+                    opacity: 0.3;
+                }
+                div:nth-child(3){
+                    opacity: 0.3;
+                }*/
             </style>
 
             <section class="global-result">
diff --git a/tasks/8.html b/tasks/8.html
index cd21aa6..4f9989b 100755
--- a/tasks/8.html
+++ b/tasks/8.html
@@ -13,6 +13,16 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                a {
+                    color:#FF679A;
+                }
+                 [href*="my-site.ru"]{
+                     color:#2E00EE;
+                 }
+                 [href^="/"]:not([href^="//"]){
+                     color:#2E00EE;
+                 }
+
             </style>
 
             <section class="global-result">
diff --git a/tasks/9.html b/tasks/9.html
index 30ac7f8..862e2e2 100755
--- a/tasks/9.html
+++ b/tasks/9.html
@@ -13,6 +13,18 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <style>
                 /* ваш код здесь... */
+                a:hover{
+                    color:#CAB4AA;
+                }
+                [href^="http"]:visited{
+                    color:#FFB45F;
+                }
+                [href^="http"]:hover{
+                    color:#FF6698;
+                }
+                [href^="http"]:active{
+                    color:#98FF66;
+                }
             </style>
 
             <section class="global-result">