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

body{
    line-height:1.6;
}

header{
    background:#0d1b2a;
    color:white;
    padding:20px 0;
}

.container{
    width:85%;
    margin:auto;
}

nav{
    display:flex;
    justify-content:space-between;
    align-items:center;
}

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

nav ul li{
    margin-left:25px;
}

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

.hero{
    background:linear-gradient(135deg,#0077ff,#00b4d8);
    color:white;
    text-align:center;
    padding:100px 20px;
}

.hero h1{
    font-size:50px;
}

.btn{
    display:inline-block;
    margin-top:20px;
    background:white;
    color:#0077ff;
    padding:12px 25px;
    text-decoration:none;
    border-radius:5px;
}

.section{
    padding:70px 0;
}

.cards{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:20px;
}

.card{
    padding:30px;
    box-shadow:0 0 10px rgba(0,0,0,0.1);
    border-radius:10px;
}

footer{
    background:#0d1b2a;
    color:white;
    text-align:center;
    padding:20px;
    margin-top:40px;
}

form input,
form textarea{
    width:100%;
    padding:12px;
    margin:10px 0;
}

button{
    background:#0077ff;
    color:white;
    border:none;
    padding:12px 20px;
    cursor:pointer;
}