td, th{
    border: 1px solid black;
    padding: 5px;
}

table{
    border-collapse: collapse;
    text-align: center;
}

div {
    display: flex;
    justify-content: center;
    align-content: center;
}

h1 {
    text-align: center;
}

input {
    margin-bottom: 20px;
    margin-left: 5px;
}