body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f4f4f4;
    text-align: center;
}

h1,h2 {
    margin-bottom: 20px;
}

table {
    background: white;
    border-collapse: collapse;
}

td, th {
    padding: 8px;
    border: 1px solid #ccc;
}

a {
    margin: 0 5px;
    text-align: center;
    border-bottom: 1px solid #eee;
}

h1 {
    text-align: center;
    margin-bottom: 20px;
}

form {
    text-align: center;
    background: white;
    padding: 20px;
    border-radius: 10px;
    display: inline-block;
    margin-bottom: 20px;
}

input,select {
    padding: 10px;
    width: 250px;
    border: 1px solid #ccc;
    margin: 8px;
    border-radius: 6px;
}

button {
    padding: 10px 15px;
    background: black;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.add_button {
    display: inline-block;
    margin: 10px auto;
    background: black;
    color: white;
    padding: 10px 15px;
    border-radius: 6px;
    text-decoration: none;
}

button:hover {
    background: gray;
}

.add_button:hover {
    background: gray;
}

table {
    width: 80%;
    border-collapse: collapse;
    background: white ;
    border-radius: 10px;
    overflow: hidden;
    margin: 0 auto;
}

th {
    background: black ;
    color: white;
    padding: 12px;
}

td {
    padding: 12px;
    text-align: center;
    border-bottom: 1px solid #eee;
}

tr:hover {
    background: #f9f9f9;
}

a {
    margin: 0 5px;
    text-decoration: none;
}