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

body{
    background:#08111f;
    color:white;
}

nav{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:20px 80px;
    background:#0d1b2a;
    position:sticky;
    top:0;
}

nav ul{
    display:flex;
    list-style:none;
}

nav li{
    margin-left:30px;
}

nav a{
    color:white;
    text-decoration:none;
}

.logo{
    font-size:24px;
    color:#00d4ff;
    font-weight:bold;
}

.hero{

    height:90vh;

    display:flex;

    justify-content:center;

    align-items:center;

    text-align:center;

    background:linear-gradient(
    rgba(0,0,0,.6),
    rgba(0,0,0,.8)),
url("https://images.unsplash.com/photo-1518770660439-4636190af475?auto=format&fit=crop&w=1400&q=80");

    background-size:cover;
}

.content{
    width:700px;
}

.hero h1{
    font-size:60px;
}

.hero h2{
    margin:20px 0;
    color:#00d4ff;
    height:40px;
}

.hero p{
    line-height:1.7;
    margin-bottom:30px;
}

button{

    padding:15px 35px;

    border:none;

    background:#00d4ff;

    color:black;

    font-size:18px;

    cursor:pointer;

    border-radius:8px;

    transition:.3s;
}

button:hover{
    transform:scale(1.05);
}

.cards{

    display:flex;

    justify-content:center;

    gap:30px;

    padding:80px;
}

.card{

    background:#10253d;

    width:300px;

    text-align:center;

    padding:40px;

    border-radius:15px;

    transition:.4s;
}

.card:hover{

    transform:translateY(-10px);

    background:#16395e;
}

.card i{

    font-size:50px;

    color:#00d4ff;

    margin-bottom:20px;
}

.about{

    padding:80px;

    text-align:center;
}

.about h2{

    color:#00d4ff;

    margin-bottom:20px;
}

footer{

    background:#0d1b2a;

    padding:30px;

    text-align:center;
}

@media(max-width:768px){

nav{
    flex-direction:column;
}

nav ul{
    margin-top:20px;
}

.cards{
    flex-direction:column;
    align-items:center;
}

.hero h1{
    font-size:40px;
}

}