index.html

<!DOCTYPE html>
<html>
<head>
<title>infotech</title>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<header>
<div class="main">
<div class="logo">
<h4>infotech</h4>
</div>
<ul>
<li class="active"><a href="">home</a></li>
<li><a href="">home</a></li>
<li><a href="">about</a></li>
<li><a href="">contact</a></li>
<li><a href="">blog</a></li>
</ul>
</div>
<div class="title">
<h1>INFOTECH BANGLA</h1>
</div>
<div class="button">
<a class="btn" href="">WATCH NOW</a>
<a class="btn" href="">LEARN MOE </a>
</div>
</header>
</body>
</html>

add css

style.css

*{
margin: 0;
padding: 0;
}
header{
background-image:linear-gradient(rgba(0,0,0,0.5),rgba(0,0,0,0.5)), url('info.jpeg');

height: 100vh;

background-size: cover;
background-position:center;
}
ul{
float: right;
list-style-type: none;
margin-top: 25px;
}
ul li{
display: inline-block;
}
ul li a{
text-decoration: none;
color: #fff;
padding: 5px 20px;
border:1px solid transparent ;
transition: 0.6s ease;
}
ul li a:hover{
background-color: #fff;
color: #000;
}
ul li.active a{
background-color:#fff;
color: #000;
}
.logo h4{
float: left;
color: #fff;
height: 10px;
margin-top: 25px;
}
.main{
max-width: 1200px;
margin: auto;
}
.title{
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
}
.title h1{
color: #fff;
font-size: 70px;
}
.button{
position: absolute;
top: 60%;
left: 50%;
transform: translate(-50%,-50%);
}
.btn{
color: #fff;
text-decoration:none;
padding:10px 30px;
border: 1px solid #fff;
transition:0.6s ease;
}
.btn:hover{
background-color: #fff;
color: #000;
}