.buttons a, a.buttons{
  width: 100%;
    display: flex;
    text-align: center;
    line-height: 1.3;
    align-content: center;
    flex-wrap: wrap;
    padding: 30px;
    justify-content: center;
}

.buttons.white a, a.buttons.white{
color: white;
     height: 100px;
}

.buttons.black a, a.buttons.black{
  color:black;
}