header {
  display: flex;
  width: 100%;
  height: 75px;
  background-color: #ffffff;
  align-items: center;
  position: fixed;
}
 
p {
  padding: 130px 0px;
  height: 500px;
}
 
.title {
  margin-right: auto;
}
 
.menu-item {
  list-style: none;
  display: inline-block;
  padding: 10px;
}

body {
background-image: url("haikei.png");
background-repeat: no-repeat;
background-attachment: fixed;
}