diff --git a/tasks/1.html b/tasks/1.html
index 62be4d7..6fb5bd8 100755
--- a/tasks/1.html
+++ b/tasks/1.html
@@ -13,7 +13,15 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <section class="global-result">
                 <style>
-                    /* ваш код здесь... */
+                    div, aside {
+                        background-color: #7babff;
+                    }
+                    .c1 {
+                        background-color: hotpink;
+                    }
+                    div#id {
+                        background-color: palegreen;
+                    }
                 </style>
 
                 <article class="global-scope">
diff --git a/tasks/10.html b/tasks/10.html
index d4510fa..d285414 100755
--- a/tasks/10.html
+++ b/tasks/10.html
@@ -12,7 +12,22 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                .title {
+                    font-weight: bold;
+                }
+
+                .title:first-letter {
+                    color: #ff6599;
+                    font-weight: bold;
+                }
+
+                .description {
+                    font-weight: bold;
+                }
+
+                .description:first-line {
+                    color: #6797ff;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/11.html b/tasks/11.html
index 7cbdc68..dc6f026 100755
--- a/tasks/11.html
+++ b/tasks/11.html
@@ -12,7 +12,16 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                input[value="invalid-email"] {
+                	border: 3px solid #ff6698;
+                }
+                input[value="invalid-email"]:focus {
+                	border: 3px solid #6395ff;
+                }
+                input[value="email@yandex.ru"] {
+					border: 3px solid #98ff66;
+                }
+
             </style>
 
             <section class="global-result">
diff --git a/tasks/12.html b/tasks/12.html
index df47ce3..735d594 100755
--- a/tasks/12.html
+++ b/tasks/12.html
@@ -12,7 +12,15 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                div {
+                    background-color: #ffff00;
+                }
+                div:first-child,
+                div:nth-child(3),
+                div:nth-child(7),
+                div:nth-child(9) {
+                        background-color: #ffb365;
+                    }
             </style>
 
             <section class="global-result">
diff --git a/tasks/13.html b/tasks/13.html
index d9e3f6e..3f2907f 100755
--- a/tasks/13.html
+++ b/tasks/13.html
@@ -12,7 +12,10 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                div:nth-of-type(4n+1) > div:first-of-type {
+                    background-color: #ff6698;
+                }
+
             </style>
 
             <section class="global-result">
diff --git a/tasks/14.html b/tasks/14.html
index 980a2a5..5002f01 100755
--- a/tasks/14.html
+++ b/tasks/14.html
@@ -12,7 +12,12 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                li {
+                    font-weight: bold;
+                }
+                li::before {
+                    content: '+ '
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/15.html b/tasks/15.html
index 705eeee..cfc9612 100755
--- a/tasks/15.html
+++ b/tasks/15.html
@@ -12,7 +12,9 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                a[href$=".zip"]::after {
+                  content: '↓';
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/16.html b/tasks/16.html
index eb614cc..30733cb 100755
--- a/tasks/16.html
+++ b/tasks/16.html
@@ -12,7 +12,18 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                .global-scope div {
+                    background-color: #ff6698;
+                }
+                .global-scope .c1 {
+                    background-color: #6797ff;
+                }
+                .global-scope #id1 {
+                    background-color: #ffb365;
+                }
+                .c7 {
+                    background-color: #ffff65 !important;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/17.html b/tasks/17.html
index c973a48..497415c 100755
--- a/tasks/17.html
+++ b/tasks/17.html
@@ -12,7 +12,13 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                input[type='checkbox']:nth-child(5):checked ~ input[type='checkbox'] {
+                    outline: 1px solid #ff6698;
+                }
+                input[type='checkbox']:nth-child(5):checked ~ input[type='checkbox']:nth-child(8):checked {
+                    outline: none;
+                }
+
             </style>
 
             <section class="global-result">
diff --git a/tasks/18.html b/tasks/18.html
index 2634da4..53409b4 100755
--- a/tasks/18.html
+++ b/tasks/18.html
@@ -12,7 +12,13 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                div {
+                    opacity: 0.5;
+                }
+
+                div:hover {
+                    opacity: 1;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/19.html b/tasks/19.html
index 3af53a6..e62675c 100755
--- a/tasks/19.html
+++ b/tasks/19.html
@@ -12,7 +12,24 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                div{
+                    background-color: #ffb365;
+                }
+                div div {
+                    background-color: #ffffff;
+                }
+                div:first-child  div:last-child {
+                    background-color: #98ff66;
+                }
+                div:nth-child(2) div:nth-child(2n) {
+                    background-color: #ff6698;
+                }
+                div:nth-child(3) div:nth-child(2n-1) {
+                    background-color: #6797ff;
+                }
+                div:last-child div:first-child {
+                    background-color: #ffff65;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/2.html b/tasks/2.html
index 27ecc28..0db040b 100755
--- a/tasks/2.html
+++ b/tasks/2.html
@@ -12,7 +12,19 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                .c1 {
+                    border: 2px solid black;
+                    background-color: #76afff;
+                }
+                .c2 {
+                    background-color: #ffb365;
+                }
+                .c1.c2 {
+                    background-color: #76afff;
+                }
+                div.c1 {
+                    background-color: #ff6698;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/20.html b/tasks/20.html
index 07a5869..541998d 100755
--- a/tasks/20.html
+++ b/tasks/20.html
@@ -12,7 +12,9 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                .red-gt2:not(:first-child):not(:nth-child(2)) div {
+                    background-color: #ff6698;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/3.html b/tasks/3.html
index c652179..40985a5 100755
--- a/tasks/3.html
+++ b/tasks/3.html
@@ -12,7 +12,12 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                .global-scope > div {
+                    border: 2px solid black;
+                }
+                div div {
+                    background-color: #6797ff;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/4.html b/tasks/4.html
index b367da7..800b3b4 100755
--- a/tasks/4.html
+++ b/tasks/4.html
@@ -12,7 +12,12 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                article + article {
+                    border-top: 1px solid black;
+                }
+                article {
+                    font-weight: bold;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/5.html b/tasks/5.html
index 98f61c4..d4843cb 100755
--- a/tasks/5.html
+++ b/tasks/5.html
@@ -12,7 +12,10 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                input[type="checkbox"]:checked ~ .tab  {
+                  background-color: #000;
+                  color: #fff;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/6.html b/tasks/6.html
index 059db07..bc179e2 100755
--- a/tasks/6.html
+++ b/tasks/6.html
@@ -12,7 +12,12 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                a:first-child {
+                    color: #6797ff;
+                }
+                a {
+                    color: #ff659c;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/7.html b/tasks/7.html
index c3e1e50..c2154b7 100755
--- a/tasks/7.html
+++ b/tasks/7.html
@@ -12,7 +12,13 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                div:nth-child(2) {
+                    opacity: 0.2;
+                }
+
+                div:nth-child(3) {
+                    opacity: 0.2;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/8.html b/tasks/8.html
index cd21aa6..e3ff845 100755
--- a/tasks/8.html
+++ b/tasks/8.html
@@ -12,7 +12,12 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                a[href^="https://"] {
+                    color: #ff6698;
+                }
+                a[href$=".com"] {
+                    color: #ff6698;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/9.html b/tasks/9.html
index 30ac7f8..f7e3ca9 100755
--- a/tasks/9.html
+++ b/tasks/9.html
@@ -3,35 +3,52 @@
     <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>color: &lt;color&gt;</code> и <code>opacity: &lt;value&gt;</code></p>
-
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
-            </style>
+                .link[href] {
+                color: #6da6ff;
+                }
+
+                .link[href]:hover {
+                    color: hotpink;
+                } 
+                
+                .link[href]:hover + .link {
+                    opacity: 0.5;
+                }
+
+                .link[href]:active {
+                    color: #9dff66;
+                }
+
+                .link[href]:active + .link {
+                    opacity: 1;
+                }
 
+                .link[href]:visited {
+                    color: #ffb466
+                }
+
+            </style>
             <section class="global-result">
                 <article class="global-scope">
                     <a class="link" href="https://ya.ru">link</a>
                     <a class="link">pseudolink</a>
                 </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>
+</html>
\ No newline at end of file