.button_cell {display: table-cell; text-align: center; vertical-align: middle; padding: 15px;}
.button_box { padding: 10px; display: flex; justify-content: center; flex-wrap: wrap; gap: 10px;  font-size:1em; }
.admin_list_button {margin-top:20px; margin-right:10px; margin-left:10px; font-size:1.2em; }
.admin_button {margin-top:20px; margin-right:10px; margin-left:10px;  font-size:1.2em; }
.yellow_button {background-color: yellow; color:white; }
.orange_button {background-color: #c45f00; color:white;} 
.green_button {background-color: darkgreen; color:white;}
.red_button {background-color: darkred; color:white; }
.blue_button {background-color: darkblue;color:white; }
.grey_button {background-color: grey;color:white; }
.hidden_button {visibility:hidden; display:none;}
.show_button {visibility:visible; display:block;}


.back_button {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    background-color: #2c3e50; 
    color: #ffffff; 
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.1s ease; 
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: none;
    -webkit-user-select: none; 
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
.back_button:hover {
    background-color: #34495e; 
    box-shadow: 0 6px 8px rgba(0, 0, 0, 0.15);
}
.back_button:active {
    background-color: #212f3c;
    transform: translateY(1px);
    box-shadow: 0 2px 3px rgba(0, 0, 0, 0.1);
}