diff --git a/tasks/1.html b/tasks/1.html
index bebada61..3a7b7f28 100644
--- a/tasks/1.html
+++ b/tasks/1.html
@@ -12,7 +12,25 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                article :first-child 
+                {
+                    background-color: #668ef9;
+                }
+
+                .c1 
+                {
+                    background-color: #f54d90;
+                }
+                
+                #id 
+                {
+                    background-color: #9bff6d;
+                }
+
+                aside 
+                {
+                    background-color: #668ef9;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/10.html b/tasks/10.html
index bc7fb50d..5851feee 100644
--- a/tasks/10.html
+++ b/tasks/10.html
@@ -12,7 +12,15 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                .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 3e34ed5f..8452599c 100644
--- a/tasks/11.html
+++ b/tasks/11.html
@@ -12,7 +12,20 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                input[value='invalid-email'] 
+                {
+                    border: 3px solid #ff6698;
+                }
+
+                input[value='invalid-email']:focus 
+                {
+                    border: 3px solid #6698ff;
+                }
+
+                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 a6a95498..971289ad 100644
--- a/tasks/12.html
+++ b/tasks/12.html
@@ -12,7 +12,15 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                div
+                {
+                    background: #ffb366;
+                }
+                
+                div:empty
+                {
+                    background: #ff6;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/13.html b/tasks/13.html
index c86c9595..404d7e19 100644
--- a/tasks/13.html
+++ b/tasks/13.html
@@ -12,7 +12,10 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                div > div:only-of-type 
+                {
+                    background-color: #ff6698;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/14.html b/tasks/14.html
index 50880fd9..3fe215a3 100644
--- a/tasks/14.html
+++ b/tasks/14.html
@@ -12,7 +12,10 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+            li::before 
+            {
+                content: '+ ';
+            }     
             </style>
 
             <section class="global-result">
diff --git a/tasks/15.html b/tasks/15.html
index 4e36c5d8..3e4b2647 100644
--- a/tasks/15.html
+++ b/tasks/15.html
@@ -12,7 +12,10 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                a[href$='.zip']::after 
+                {
+                    content: '↓';
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/16.html b/tasks/16.html
index f26e1993..c78c6a17 100644
--- a/tasks/16.html
+++ b/tasks/16.html
@@ -12,7 +12,25 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                .global-scope div
+                {
+                    background-color: #ff6698;
+                }
+
+                .global-scope .c1 
+                {
+                    background-color: #6698ff;
+                }
+
+                #id1 
+                {
+                    background-color: #ffb366;
+                }
+
+                .c7 
+                {
+                    background-color: #ff6 !important;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/17.html b/tasks/17.html
index 83e0910b..8706d95b 100644
--- a/tasks/17.html
+++ b/tasks/17.html
@@ -12,7 +12,10 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                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 2c7df3cf..dd0ccf64 100644
--- a/tasks/18.html
+++ b/tasks/18.html
@@ -12,7 +12,15 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                div 
+                {
+                    opacity: .5;
+                }
+                
+                div:hover
+                {
+                    opacity: 1;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/19.html b/tasks/19.html
index bf72b5b2..085f4778 100644
--- a/tasks/19.html
+++ b/tasks/19.html
@@ -12,7 +12,35 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                article div
+                {
+                    background-color: #ffb366;
+                }
+
+                div div 
+                {
+                    background-color: white;
+                }
+
+                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: #6698ff;
+                }
+
+                div:last-child div:first-child
+                {
+                    background-color: #ff6;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/2.html b/tasks/2.html
index 64de7fc5..c51b16d3 100644
--- a/tasks/2.html
+++ b/tasks/2.html
@@ -12,7 +12,28 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+div:first-child 
+{
+    background-color: #668ef9;
+    border: 2px solid #000;
+}
+
+div:nth-child(2) 
+{
+    background-color: #f54d90;
+    border: 2px solid #000;
+}
+
+div:nth-child(3) 
+{
+    background-color: #f7a767;
+}
+
+div:last-child 
+{
+    background-color: #f54d90;
+    border: 2px solid #000;
+}
             </style>
 
             <section class="global-result">
diff --git a/tasks/20.html b/tasks/20.html
index 4adec5a2..397d011b 100644
--- a/tasks/20.html
+++ b/tasks/20.html
@@ -12,7 +12,10 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                div:nth-child(n+3) div
+                {
+                    background-color: #ff6698;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/3.html b/tasks/3.html
index 8b58ac9e..c6382ca1 100644
--- a/tasks/3.html
+++ b/tasks/3.html
@@ -12,7 +12,15 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                div > div 
+                {
+                    background-color: #668ef9;
+                }
+
+                article > div 
+                {
+                    border: 2px solid #000;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/4.html b/tasks/4.html
index 5745abad..aa6e2073 100644
--- a/tasks/4.html
+++ b/tasks/4.html
@@ -12,7 +12,15 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                article:nth-child(2n) 
+                {
+                    background-color: #fdff71;
+                }
+
+                article:nth-child(n+5) 
+                {
+                    border-top: 1px solid #000;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/5.html b/tasks/5.html
index cf16c456..dd83fd10 100644
--- a/tasks/5.html
+++ b/tasks/5.html
@@ -12,7 +12,11 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                input:checked + br + div 
+                {
+                    background: #000;
+                    color: #fff;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/6.html b/tasks/6.html
index 0299b5bf..285149f1 100644
--- a/tasks/6.html
+++ b/tasks/6.html
@@ -12,7 +12,16 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                a[href='https://vk.ru']
+                {
+                    color: #698ef9;
+                }
+
+                a[href='https://yandex.ru'],
+                a[href='https://market.yandex.ru/']
+                {
+                    color: #f54d90;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/7.html b/tasks/7.html
index b5ea672e..75c7c759 100644
--- a/tasks/7.html
+++ b/tasks/7.html
@@ -12,7 +12,10 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                .global-scope img:not([alt])
+                {
+                    opacity: .3;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/8.html b/tasks/8.html
index abca880c..759d4ec6 100644
--- a/tasks/8.html
+++ b/tasks/8.html
@@ -12,7 +12,12 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                a[rel='external'],
+                a[href^='http://']:not([href*='my-site.ru']),
+                a[href^='https://']:not([href*='my-site.ru'])
+                {
+                    color: #ff6698;
+                }
             </style>
 
             <section class="global-result">
diff --git a/tasks/9.html b/tasks/9.html
index 326d5b39..a9bf6f3f 100644
--- a/tasks/9.html
+++ b/tasks/9.html
@@ -12,7 +12,30 @@ <h1 class="global-heading">&nbsp;</h1>
 
         <main class="global-results">
             <style>
-                /* your styles here */
+                a[href='https://ya.ru']
+                {
+                    color: #6698ff;
+                }
+                
+                a[href='https://ya.ru']:hover
+                {
+                    color: #ff6698;
+                }
+
+                a:not([href='https://ya.ru']):hover
+                {
+                    opacity: .6;
+                }
+
+                a[href='https://ya.ru']:visited
+                {
+                    color: #ffb366;
+                }
+
+                a[href='https://ya.ru']:active
+                {
+                    color: #98ff66;
+                }
             </style>
 
             <section class="global-result">