.button {
    /* margin: 25px 50px 75px 100px; */
    background-color: white;
    color: black;
    padding: 15px 32px;
    font-size: 16px;
    text-align: center;
    border: 2px solid #4CAF50; /* Green */
    -webkit-transition-duration: 0.2s; /* Safari */
    transition-duration: 0.2s;
    text-decoration: none;
}

.button:hover {
    background-color: #4CAF50; /* Green */
    color: white;
}

li.button-div {
  background: white;
  margin-bottom: 50px;
}

li.button-div:last-child {
 margin-bottom: 0px;
}

ul {
    list-style-type: none;
}