.list_lu.btn {
    background-color: #ffffff;
    color: #2d4e9d;
    border: 2px solid #2d4e9d;
    padding: 6px 15px;
    font-size: 1em;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, transform 0.1s;
}

.list_lu.btn:hover {
    background-color: #e1e7f5;
}

.list_lu.btn:hover {
    background-color: #e1e7f5;
}

.list_lu.btn:active {
    background-color: #c3cee8;
    transform: scale(0.97);
}

.list_lu.btn.main {
    z-index: 1000;
    position: fixed;
    top: 2em;
    right: 2em;
}

.list_lu.center {
  text-align: center;
}