body{
    font-family:Arial,sans-serif;
    margin:0;
    padding:0;
}

header{
    background:#222;
    color:white;
    padding:20px;
}

nav a{
    color:white;
    margin:10px;
    text-decoration:none;
}

section{
    padding:40px;
}

.card{
    background:#f4f4f4;
    padding:20px;
    margin:10px 0;
    border-radius:10px;
}

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

button{
    background:#007bff;
    color:white;
    border:none;
    padding:10px 20px;
    cursor:pointer;
}