* {
    border: 0;
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

body {
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

button {
    background-color: #eee;
    padding: 10px 50px;
    cursor: pointer;
    border-radius: 10px;
}

table {
    width: 300px;
    font: 17px Calibri;
}

table,
th,
td {
    border: solid 1px #ddd;
    border-collapse: collapse;
    padding: 2px 3px;
    text-align: center;
}