* {
    box-sizing: border-box;
}

button{
    width: 100%;
    font-size: 2em;
}
input, button, select{
    width: 100%;
    font-size: 2em;
    margin: 10px;
}

table {
    border: 1px;
    border-collapse: collapse;
    width: 300px;
    height: 150px;
}

td,th {
    border: 1px solid black;
    text-align: center;
}