* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background-color: #f9f9f9;
  margin: 0 auto;
  max-width: 1200px;
  font-family: Arial, sans-serif;
}
header {
  background-color: #ffffff;
  color: #222;
  display: flex;
  align-items: center;
  justify-content: space-around;
  margin: 20px 0 20px 0;
  border-bottom: 1px solid #dddddd;
  height: 140px;
}
h1 {
  font-size: 34px;
}
p {
  font-size: 20px;
}
li {
  font-size: 20px;
  margin-left: 10px;
}
p a {
  text-decoration: none;
  color: black;
}
p a:hover:first-child {
  color: #ff6600;
}
p a:hover:last-child {
  color: rgb(84, 84, 252);
}
nav {
  display: flex;
  gap: 10px;
  justify-content: space-around;
  font-size: 22px;
  margin-bottom: 20px;
}
nav a {
  text-decoration: none;
  color: #222;
  border: 1px solid #555555;
  padding: 20px;
  border-radius: 20px;
}
nav a:hover {
  background-color: rgb(84, 84, 252);
  color: #ff6600;
  border: 0px;
  color: white;
  transform: scale(1.1);
  transition: all 0.4s ease;
}
.sidebar {
  background-color: #ffffff;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 10px;
  margin-right: 10px;
  font-size: 18px;
}
.sidebar a {
  border: 1px solid #dddddd;
  border-radius: 15px;
  text-decoration: none;
  justify-self: center;
  padding: 10px;
  background-color: #f0f0f0;
  color: #222;
}
.sidebar a:hover {
  background-color: rgb(84, 84, 252);
  color: #fff;
  transform: scale(1.1);
  transition: all 0.4s ease;
}
.tümiçerik {
  display: grid;
  grid-template-columns: 1fr 4fr;
}
.içerik {
  background-color: #ffffff;
  color: #222;
  padding: 20px;
  min-height: 400px;
  border: 1px solid #dddddd;
  border-radius: 10px;
}
.icerik-alani {
  line-height: 1.6;
  display: none;
}
footer {
  color: #555;
  text-align: center;
  margin: 20px 0;
}
h2 {
  margin: 15px 0;
}
@keyframes kaydir {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(20px);
  }
}
.kutu {
  animation: kaydir 2s ease-in-out forwards;
}
.hover {
  background-color: blue;
  transition: background-color 0.3s ease;
}
.hover:hover {
  background-color: red;
}
#öncekiKonu {
  color: black;
  padding: 20px;
  border-radius: 20px;
  font-size: 18px;
}
#sonrakiKonu {
  font-size: 18px;
  color: black;
  padding: 20px;
  border-radius: 20px;
}
#öncekiKonu:hover {
  border: 0;
  color: white;
  transform: scale(1.1);
  transition: all 0.4s ease;
  background-color: rgb(84, 84, 252);
}
#sonrakiKonu:hover {
  border: 0;
  color: white;
  transform: scale(1.1);
  transition: 0.3s ease;
  background-color: rgb(84, 84, 252);
}