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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <div class="container animated slideInDown">
  <h1>Dersi geçmek için finalden kaç almam lazım?</h1>
  <p>Dersin adını ve vize notunuzu girdikten sonra dersi geçebilmek için finalden en az kaç almanız gerektiğini hesaplar, yukarıdan aşağıya listeler.</p>

  <form id="form">
      <label for="ders" >Dersin Adı</label>
      <input type="text" id="ders" class="u-full-width">

      <label for="vize">Vize Notu</label>
      <input type="number" id="vize" class="u-full-width">

      <input type="submit" value="Öğren" class="u-full-width">

  <table class="u-full-width">
        <th>Dersin Adı</th>
        <th>Vize Notu</th>
        <th>Geçer Not</th>

    <tbody id="liste">

              * {
  font-family: Helvetica;

.basarili, .hata {
  color: white;
  padding: 5px;
  margin: 5px 0 15px 0;
  border-radius: 5px;

.basarili {
  background: green;

.hata {
  background: red;

.sil {
  font-weight: bold;
  text-decoration-line: none;

a {
  border: .15em solid red;
  border-radius: 100%;
  padding: .15em;
  color: red;

a:hover {
  background-color: red;
  color: white;

a:active {
  font-size: .99em;
              class Ders {
  constructor(dersinAdi, vizeNotu, gecerNot) {
     this.dersinAdi = dersinAdi;
     this.vizeNotu = vizeNotu;
     this.gecerNot = gecerNot;

class Arayuz {
  listeyeDersiEkle(ders) {
    const liste = document.querySelector('#liste');
    const satir = document.createElement('tr');
    satir.innerHTML = `
      <td><a href="#" class="sil">x</a></td>  
  bildirimGoster(mesaj, stil) {
    const div = document.createElement('div');
    div.className = 'bildirim' + ' ' + stil;
    div.textContent = mesaj;
    const cerceve = document.querySelector('.container');
    const form = document.querySelector('#form');
    cerceve.insertBefore(div, form);
    setTimeout(() => {
    }, 1500);
  listedenDersiSil(element) {
    if (element.className === 'sil') {

const form = document.querySelector('#form');

form.addEventListener('submit', (e) => {
  const dersinAdi = document.querySelector('#ders').value;
  const vizeNotu = document.querySelector('#vize').value;
  let gecerNot = Math.floor((60 - (vizeNotu * (4 / 10))) * (10 / 6));
  if (gecerNot < 50) {
    gecerNot = 50;
  const ders = new Ders(dersinAdi, vizeNotu, gecerNot);
  const arayuz = new Arayuz();
  if (dersinAdi === '' || vizeNotu === '' || vizeNotu < 0 || vizeNotu > 100) {
    arayuz.bildirimGoster('Eksik veya hatalı bir giriş yaptınız!', 'hata');
  } else {
    arayuz.bildirimGoster('Ders listeye eklendi!', 'basarili');
    // girdi kutularını temizliyor
    document.querySelector('#ders').value = '';
    document.querySelector('#vize').value = '';

const liste = document.querySelector('#liste');

liste.addEventListener('click', (e) => {
  const arayuz = new Arayuz();
  const element = e.target;
  arayuz.bildirimGoster('Ders listeden silindi!', 'basarili');
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