/* Style the button that is used to open and close the collapsible content */
.collapsible-btn {
    background-color: #777;
    color: white;
    cursor: pointer;
    padding: 5px;
    width: 60%;
    border: none;
    text-align: center;
    outline: none;
    font-size: 15px;
}

/* Add a background color to the button if it is clicked on (add the .active class with JS), and when you move the mouse over it (hover) */
.active, .collapsible-btn:hover {
    background-color: #555;
}

/* Style the collapsible content. Note: hidden by default */
.collapsible-content {
    /*padding: 0 18px;*/
    width: 60%;
    margin: auto;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease-out;
    background-color: #f1f1f1;
}

/* Create two equal columns that floats next to each other */
.column {
    float: left;
    width: 50%;
}

table {
    font-family: arial, sans-serif;
    border-collapse: collapse;
    width: 60%;
}

td, th {
    border: 1px solid #dddddd;
    text-align: left;
    padding: 8px;
}

tr:nth-child(even) {
    background-color: #808080;
}

tr:first-child td {
    font-weight: bold;
    text-align: center;
}