staly.css

.mainback {
    background: url("images/png.jpg ");
    height: 80vh;
    width: 100vw;
    background-size: cover;
    background-position: center center;
    position: relative;
} 
.btnj{
    background-color: #ddd;
    border: none;
    text-align: center;
    transition: 0.3;
}
.btnj:hover{
    background-color: green;
    color: white;
    border: none;
}
.mainback1 {
    background: url("images/png.webp");
    height: 80vh;
    width: 100vw;
    background-size: cover;
    background-position: center center;
    position: relative;
} 
.mainback2 {
    background: url("images/jihad.jpg");
    height: 80vh;
    width: 100vw;
    background-size: cover;
    background-position: center center;
    position: relative;
}
.mainback3 {
    background: url("images/jihad2.webp");
    height: 80vh;
    width: 100vw;
    background-size: cover;
    background-position: center center;
    position: relative;
}
.mainback4 {
    background: rgb(28, 27, 27)
   
} 
a:link{text-decoration: none;}