Since you are working with fixed widths, just add some padding to the bottom:
button {
width: 200px;
height: 200px;
padding: 10px;
padding-bottom: 120px;
background: #EBEBEB;
color: #124191;
font-size: 16px;
text-align: left;
border: none;
display: table-cell;
vertical-align: top;
}