.box{
    float:left;
    margin-right:20px;
}
.clear{
    clear:both;
}

.centre {
  margin: auto;
  width: 50%;
  border: 3px solid black;
  padding: 10px;
  text-align:center;
}

.btn-link {
    border: none;
    outline: none;
    background: none;
    cursor: pointer;
    color: #0000EE;
    padding: 0;
    text-decoration: underline;
    font-family: inherit;
    font-size: inherit;
}