body,
html {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

header {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  height: 60px;
  background-color: #fff;
  color: white;
}

.hamburger {
  position: absolute;
  right: 10px;
  font-size: 30px;
  cursor: pointer;
  color: #333;
}

.logo {
  margin-top: 50px;
  font-size: 24px;
}

.logo img {
  width: 200px;
}

.menu {
  position: fixed;
  top: 0;
  left: -150px;
  width: 150px;
  height: 100%;
  background-color: #444;
  color: white;
  transition: left 0.3s;
  padding-top: 60px;
}

.menu ul {
  list-style-type: none;
  padding: 0;
}

.menu ul li {
  padding: 10px;
  text-align: center;
}

.menu ul li a {
  color: white;
  text-decoration: none;
}

.content {
  padding: 20px;
  margin-top: 100px;
}

footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  height: 40px;
  background-color: #333;
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
}