button, input[type=button] {
    padding: 1em 2em;
    font-size: 1.2em; font-weight: bold;
    border: 4px solid grey;
    border-radius: 4px;
    background-color: yellow;
}

button:hover, input[type=button]:hover {
    background-color: green;
    cursor: pointer;
} 

input[type=text] {
    font-size: 1.4em;
}