diff --git a/colours.css b/colours.css
index 09570ed..a0b49e1 100644
--- a/colours.css
+++ b/colours.css
@@ -12,15 +12,15 @@
 
 .yellow
 {
-    color: #ffff66
+    color: #ffff66;
 }
 
 .green
 {
-    color: #98ff66
+    color: #98ff66;
 }
 
 .blue
 {
-    color: #6698ff
-}
\ No newline at end of file
+    color: #6698ff;
+}
diff --git a/tasks/1.html b/tasks/1.html
index 62be4d7..1f4f638 100755
--- a/tasks/1.html
+++ b/tasks/1.html
@@ -13,7 +13,17 @@ <h1 class="global-heading">&nbsp;</h1>
         <main class="global-results">
             <section class="global-result">
                 <style>
-                    /* ваш код здесь... */
+                    div, aside {
+                      background: #6897FF;
+                    }
+
+                    .c1 {
+                      background: #FE6697;
+                    }
+
+                    #id {
+                      background: #98FF68;
+                    }
                 </style>
 
                 <article class="global-scope">
diff --git a/tasks/10.html b/tasks/10.html
index d4510fa..8aafbe2 100755
--- a/tasks/10.html
+++ b/tasks/10.html
@@ -12,7 +12,13 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                .title::first-letter {
+                  color: #ff6698;
+                }
+
+                .description::first-line {
+                  color: #6698ff;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/11.html b/tasks/11.html
index 7cbdc68..2d99ea7 100755
--- a/tasks/11.html
+++ b/tasks/11.html
@@ -12,7 +12,17 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                input:first-child {
+                  border: 3px solid #ff6698;
+                }
+
+                input:first-child:focus {
+                  border: 3px solid #6698ff;
+                }
+
+                input:last-child {
+                  border: 3px solid #98ff66;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/12.html b/tasks/12.html
index df47ce3..f63f4bd 100755
--- a/tasks/12.html
+++ b/tasks/12.html
@@ -12,7 +12,16 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                div {
+                  background: #ffff66;
+                }
+
+                div:first-child,
+                div:nth-child(3),
+                div:nth-child(7),
+                div:last-child {
+                  background: #ffb366;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/13.html b/tasks/13.html
index d9e3f6e..cba0a23 100755
--- a/tasks/13.html
+++ b/tasks/13.html
@@ -12,7 +12,11 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                div:first-child div,
+                div:nth-child(5) div:first-child,
+                div:last-child div:first-child {
+                  background: #ff6698;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/14.html b/tasks/14.html
index 980a2a5..088bef2 100755
--- a/tasks/14.html
+++ b/tasks/14.html
@@ -12,7 +12,9 @@ <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..688a198 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..20bed68 100755
--- a/tasks/16.html
+++ b/tasks/16.html
@@ -12,7 +12,21 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                .global-scope div {
+                  background: #ff6698;
+                }
+
+                .global-scope .c1 {
+                  background: #6698ff;
+                }
+
+                .global-scope #id1 {
+                  background: #ffb366;
+                }
+
+                .global-scope .c7 {
+                  background: #ffff66 !important;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/17.html b/tasks/17.html
index c973a48..f3a3a5e 100755
--- a/tasks/17.html
+++ b/tasks/17.html
@@ -12,7 +12,15 @@ <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..220ba80 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..ae8ac91 100755
--- a/tasks/19.html
+++ b/tasks/19.html
@@ -12,7 +12,29 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                div {
+                  background: #ffb366;
+                }
+
+                div div {
+                  background: #fff;
+                }
+
+                div:first-child div:last-child {
+                  background: #98ff66;
+                }
+
+                div:nth-child(2) div:nth-child(2n) {
+                  background: #ff6698;
+                }
+
+                div:nth-child(3) div:nth-child(2n-1) {
+                  background: #6698ff;
+                }
+
+                div:last-child div:first-child {
+                  background: #ffff66;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/2.html b/tasks/2.html
index 27ecc28..462b1e0 100755
--- a/tasks/2.html
+++ b/tasks/2.html
@@ -12,7 +12,18 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                .c1 {
+                  border: 2px solid #000;
+                  background: #FE6697;
+                }
+
+                .c2 {
+                  background-color: #FFB365;
+                }
+
+                .c1.c2 {
+                  background-color: #6897FF;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/20.html b/tasks/20.html
index 07a5869..8148da5 100755
--- a/tasks/20.html
+++ b/tasks/20.html
@@ -12,7 +12,12 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                div div:nth-last-child(3),
+                div div:nth-last-child(3) ~ div,
+                div div:nth-last-child(4),
+                div div:nth-last-child(4) ~ div {
+                  background: #ff6698;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/3.html b/tasks/3.html
index c652179..0732259 100755
--- a/tasks/3.html
+++ b/tasks/3.html
@@ -12,7 +12,14 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                div {
+                  border: 2px solid #000;
+                }
+
+                div div {
+                  border: none;
+                  background: #6A96FF;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/4.html b/tasks/4.html
index b367da7..e181c57 100755
--- a/tasks/4.html
+++ b/tasks/4.html
@@ -12,7 +12,9 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                article + article {
+                  border-top: 1px solid #000;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/5.html b/tasks/5.html
index 98f61c4..3869949 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: #000;
+                  color: #fff;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/6.html b/tasks/6.html
index 059db07..72d307a 100755
--- a/tasks/6.html
+++ b/tasks/6.html
@@ -12,7 +12,13 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                a:first-child {
+                  color: #6A96FF;
+                }
+
+                a {
+                  color: #FE6697;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/7.html b/tasks/7.html
index c3e1e50..cb8a7df 100755
--- a/tasks/7.html
+++ b/tasks/7.html
@@ -12,7 +12,10 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                div:nth-child(2) img,
+                div:nth-child(3) img {
+                  opacity: 0.25;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/8.html b/tasks/8.html
index cd21aa6..64b4dd3 100755
--- a/tasks/8.html
+++ b/tasks/8.html
@@ -12,7 +12,11 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+                li:nth-child(2) a,
+                li:nth-child(5) a,
+                li:last-child a {
+                  color: #ff6698;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/9.html b/tasks/9.html
index 30ac7f8..37f4b50 100755
--- a/tasks/9.html
+++ b/tasks/9.html
@@ -12,7 +12,29 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* ваш код здесь... */
+              .link[href] {
+                color: #6698ff;
+              }
+
+              .link[href]:hover, .link[href]:visited:hover {
+                color: #ff6698;
+              }
+
+              .link[href]:hover + .link {
+                opacity: 0.5;
+              }
+
+              .link[href]:active, .link[href]:visited:active {
+                color: #98ff66;
+              }
+
+              .link[href]:active + .link {
+                opacity: 1;
+              }
+
+              .link[href]:visited {
+                color: #ffb366;
+              }
             </style>
 
             <section class="global-result">