body{
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f2f2f2;
    margin: 0;
    padding: 0;
}

header{
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 20px;
}

nav{
    background-color: #34495e;
    padding: 10px;
    text-align: right;
}

nav button{
    padding: 10px;
    cursor: pointer;
}

section{
    width: 80%;
    margin: auto;
    margin-top: 20px;
}

article{
    background-color: white;
    padding: 20px;
    border-radius: 10px;
}

h1{
    margin: 0;
}

h2{
    margin-top: 0;
}

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

th{
    background-color: #2c3e50;
    color: white;
    padding: 10px;
}

td{
    border: 1px solid #cccccc;
    padding: 10px;
}

input[type=text],
input[type=email]{
    width: 300px;
    padding: 8px;
}

input[type=submit]{
    padding: 8px 15px;
    cursor: pointer;
}