body{
    font-family:Arial,sans-serif;
    margin:0;
    padding:20px;
    background:#f5f5f5;
}

.container{
    max-width:900px;
    margin:auto;
}

h1,h2,h3{
    margin-top:0;
}

button{
    background:#1565c0;
    color:white;
    border:none;
    border-radius:8px;
    padding:12px 18px;
    font-size:16px;
    cursor:pointer;
}

button:hover{
    background:#0d47a1;
}

input{
    width:100%;
    padding:12px;
    margin-bottom:10px;
    box-sizing:border-box;
    font-size:16px;
}

table{
    width:100%;
    border-collapse:collapse;
}

th,td{
    padding:10px;
    border-bottom:1px solid #ddd;
}

.card{
    background:white;
    border-radius:10px;
    padding:15px;
    margin-bottom:15px;
    box-shadow:0 2px 6px rgba(0,0,0,.08);
}

@media (max-width:768px){

    body{
        padding:10px;
    }

    h1{
        font-size:28px;
    }

    button{
        width:100%;
        margin-top:8px;
    }

    table{
        font-size:14px;
    }

}