body{
    margin:0;
    padding:0;
    font-family: Arial, sans-serif;
}

.hero{
    position:relative;
    width:100%;
    height:100vh;
    background-image:url('images/desktop-hero.png');
    background-size:cover;
    background-position:center;
    display:flex;
    justify-content:center;
    align-items:center;
    text-align:center;
}

.overlay{
    background:rgba(0,0,0,0.45);
    padding:25px 35px;
    border-radius:20px;
    max-width:500px;
}

h1{
    color:white;
    font-size:48px;
    margin-bottom:15px;
}

p{
    color:white;
    font-size:28px;
}

button{
    margin-top:35px;
    padding:15px 40px;
    font-size:20px;
    font-weight:bold;
    background:#2563eb;
    color:white;
    border:none;
    border-radius:12px;
    cursor:pointer;
}

button:hover{
    background:#1d4ed8;
}

@media(max-width:768px){

.hero{
    background-image:url('images/mobile-hero.png');
    background-size:cover;
    background-position:center;
}

h1{
    font-size:42px;
}

p{
    font-size:22px;
}

}
.test-btn{
    position:absolute;
    left:70px;
    top:380px;
    width:300px;
    height:80px;
}