diff --git a/Powt_01/zestawB.html b/Powt_01/zestawB.html
new file mode 100644
index 0000000..c258601
--- /dev/null
+++ b/Powt_01/zestawB.html
@@ -0,0 +1,216 @@
+<!DOCTYPE html>
+<html lang="pl">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Zestaw B</title>
+    <style>
+        * {
+            margin: 0;
+            padding: 0;
+            box-sizing: border-box;
+        }
+    </style>
+</head>
+<body>
+    <section><hr><h3>Zadanie 1</h3>
+        <script>
+            function fiboDesc(n) {
+                if (n < 1) {
+                    return [];
+                } else if (n == 1) {
+                    return [0];
+                }
+
+                let t = [0, 1];
+
+                while(t.length < n) {
+                    let s = t[t.length - 1] + t[t.length - 2];
+                    t.push(s);
+                }
+
+                return t.reverse();
+            }
+
+            document.write(fiboDesc(7));
+        </script>
+    </section>
+
+    <section><hr><h3>Zadanie 2</h3>
+        <div style="position: relative; box-sizing: content-box; width: 500px; height: 500px; background-color: lightgray; border: 2px solid black;">
+            <script>
+                function opusc(okrag) {
+                    okrag.dataset.intervalID = setInterval(function () {
+                        if(parseInt(okrag.style.top) < 500 - parseInt(okrag.style.height)) {
+                            okrag.style.top = parseInt(okrag.style.top) + 1 + 'px';
+                        } else {
+                            clearInterval(okrag.dataset.intervalID);
+                        }
+                    }, 10);
+                }
+                
+                function przestan(okrag) {
+                    clearInterval(okrag.dataset.intervalID);
+                }
+
+                for(let i = 0 ; i < 10; i++) {
+                    let wymiar = Math.floor(Math.random() * 21) + 10;
+                    let left = Math.floor(Math.random() * 471);
+                    let top = Math.floor(Math.random() * 471);
+
+                    document.write(`
+                        <div
+                            style="width: ${wymiar}px; height: ${wymiar}px; position: absolute;
+                            top: ${top}px; left: ${left}px; border: 1px solid black;
+                            border-radius: 100%; cursor: pointer;"
+                            onmouseover="opusc(this)" onmouseleave="przestan(this)"
+                        >
+                        </div>
+                    `);
+                }
+            </script>
+        </div>
+    </section>
+
+    <section><hr><h3 style="color: red;">Zadanie 3</h3>
+        
+    </section>
+
+    <section><hr><h3>Zadanie 4</h3>
+        <pre><script>
+            function sentenceStats(txt) {
+                let zdania_inne = 0;
+
+                for(let i = 0; i < txt.length; i++) {
+                    switch(txt[i]) {
+                        case '!':
+                            zdania_inne++;
+                            break
+                        case '?':
+                            zdania_inne++;
+                            break
+                    }
+                }
+
+                let zdania_dlugie = 0
+                let tablica_zdan = txt.split(/[.!?]/)
+                
+                if(tablica_zdan[tablica_zdan.length - 1] == '') {
+                    tablica_zdan.pop();
+                }
+
+                tablica_zdan.forEach(zdanie => {
+                    if(zdanie.trim().split(' ').length > 5) {
+                        zdania_dlugie++;
+                    }
+                })
+
+                return JSON.stringify({
+                    "zdania": tablica_zdan.length,
+                    "inne": zdania_inne,
+                    "dlugie": zdania_dlugie
+                }, null, 5)
+            }
+
+            document.write(sentenceStats("Ala ma kota. Ja też niby? Ok. Lorem ipsum dolor sit amet consecteur! Czy ty masz psa? To naprawdę świetne! Lorem ipsum dolor sit amet."))
+        </script></pre>
+    </section>
+
+    <section><hr><h3>Zadanie 5</h3>
+        <input type="number" name="val5" id="val5" value="1" min="1">
+        <button id="start5">Start</button>
+        <div
+            id="odliczanie" style="border: 2px solid black; font-size: 2em; width: 12rem; height: 4rem; display: flex; justify-content: center; align-items: center;"
+        >0</div>
+
+        <script>
+            let n = 0;
+
+            document.getElementById("start5").onclick = function() {
+                const div = document.getElementById("odliczanie")
+                if(div.dataset.intervalID) { clearInterval(div.dataset.intervalID) }
+
+                if(parseInt(document.getElementById("val5").value) > 0) {
+                    n = parseInt(document.getElementById("val5").value);
+                    
+                    div.innerText = n;
+                    n--;
+
+                    div.dataset.intervalID = setInterval(function() {
+                        if(n > 0) {
+                            div.innerText = n;
+                            n--;
+                        } else {
+                            div.innerText = n;
+                            clearInterval(div.dataset.intervalID)
+                        }
+                    }, 1000);
+                }
+            }
+        </script>
+    </section>
+
+    <section><hr><h3>Zadanie 6</h3>
+        <input type="number" name="val6" id="val6" value="3" min="1" max="10"><button id="start6">Generuj</button>
+        <div
+            style="
+                width: 500px;
+                height: 500px;
+                border: 2px solid black;
+                box-sizing: content-box;
+                display: flex;
+                align-items: center;
+                justify-content: center;
+                background-color: white;
+            "
+            id="k0"
+        ></div>
+
+        <script>
+            function kolor(kwadrat) {
+                let kolory = ['red', 'limegreen', 'royalblue', 'orange', 'magenta']; 
+                let k_index = Math.floor(Math.random() * kolory.length);
+            
+                kwadrat.style.backgroundColor = kolory[k_index];
+            }
+            function bialy(kwadrat) {
+                kwadrat.style.backgroundColor = 'white';
+            }
+
+            document.getElementById("start6").onclick = function() {
+                for(let i = 1; i <= parseInt(document.getElementById("val6").value); i++) {
+                    let percent = Math.floor(Math.random() * 16) + 50;
+                    
+                    document.getElementById(`k${i-1}`).innerHTML = `
+                        <div id="k${i}"
+                            style="
+                                width: ${percent}%;
+                                height: ${percent}%;
+                                border: 1px solid black;
+                                box-sizing: content-box;
+                                display: flex;
+                                align-items: center;
+                                justify-content: center;
+                                cursor: pointer;
+                                background-color: white;
+                                transition: background-color 150ms ease;
+                            "
+                        ></div>
+                    `
+
+                    document.getElementById(`k${i}`).addEventListener('mouseenter', function () {
+                        kolor(document.getElementById(`k${i}`))
+                        bialy(document.getElementById(`k${i - 1}`))
+                    });
+                    document.getElementById(`k${i}`).addEventListener('mouseleave', function () {
+                        bialy(document.getElementById(`k${i}`));
+                        if(i > 1) {
+                            kolor(document.getElementById(`k${i - 1}`))
+                        }
+                    });
+                }
+            }
+        </script>
+    </section>
+</body>
+</html>