.choose-seat {
  display:table; 
  width:100%; 
  height:100%;
}

.choose-seat__btn {
    color: #ffffff !important;
    font-size: 20px;
    font-family: 'GraphikLCG',Arial,sans-serif;
    font-weight: 600;
    letter-spacing: 1.6px;
    border-radius: 3px;
    background-color: #439c8c;
    background-position: center center;
    border-color: transparent;
    border-style: solid;
    transition: background-color 0.2s ease-in-out, color 0.2s ease-in-out, border-color 0.2s ease-in-out;
    display: table-cell;
    vertical-align: middle;
    line-height:1;
    text-align:center;
    width: 100%;
    height:100%
}