*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    font-family:Arial, Helvetica, sans-serif;
    background:#f5f5f5;
    color:#222;
    line-height:1.6;
}

header{
    background:#143d6b;
    color:white;
    padding:25px;
}

header h1{
    font-size:2.2em;
}

header p{
    opacity:0.9;
}

nav{
    background:#0f2d4d;
    display:flex;
    justify-content:center;
    flex-wrap:wrap;
}

nav a{
    color:white;
    text-decoration:none;
    padding:18px 30px;
    transition:0.3s;
}

nav a:hover{
    background:#1d4d80;
}

main{
    width:90%;
    max-width:1100px;
    margin:auto;
    padding:40px 0;
}

section{
    background:white;
    padding:30px;
    margin-bottom:40px;
    border-radius:10px;
    box-shadow:0px 5px 15px rgba(0,0,0,0.08);
}

section h2{
    color:#143d6b;
    margin-bottom:20px;
}

ul{
    margin-left:20px;
}

footer{
    background:#143d6b;
    color:white;
    text-align:center;
    padding:20px;
    margin-top:40px;
}

.button{
    display:inline-block;
    margin-top:15px;
    padding:12px 22px;
    background:#143d6b;
    color:white;
    text-decoration:none;
    border-radius:5px;
}

.button:hover{
    background:#1d4d80;
}