body {
    font-family:'Courier New', Courier, monospace;
    background-color:white;
    text-align: center;
}

input {
    margin: 5px;
    padding: 8px;
    width: 150px;
}

button {
    margin: 5px;
    padding: 8px 15px;
    background-color:aquamarine;
    color:white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

button:hover {
    background-color: green;
}

table {
    width: 70%;
    margin: 20px auto;
    border-collapse: collapse;
    text-align: center;
}

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

td {
    padding: 10px;
    border: 2px solid blue;
}

tbody tr:nth-child(even) {
    background-color:white;
    color:white;
    border: 2px solid grey;
} 

tbody tr:nth-child(odd) {
    background-color:blue;
    color:white;
    border: 2px solid grey;
}

h2 {
    margin-top: 30px;
}