body{
    margin:0;
    font-family:Arial;
    background:#E3F2FD;
    text-align:center;
}

header{
    background:#1976D2;
    color:white;
    padding:20px;
}

.menu{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
    gap:15px;
    padding:20px;
}

button{
    padding:20px;
    font-size:20px;
    border:none;
    border-radius:12px;
    background:#42A5F5;
    color:white;
    cursor:pointer;
}

button:hover{
    background:#1565C0;
}