#page_wrapper {
    margin-left: 360px;
    width: calc(100% - 360px);
}
.page-header{
    border-bottom: 0;
}
.page-header.empty{
    min-height: 100px; 
}

.certificate_list{
    border-bottom : 1px solid #9C9C9C;
}

.subheadline {
    font-size: 2.2rem;
    font-weight: bold;
    color: #333;
    padding: 10px 0;
}
.btn-heading {
    color: #F7A600;
    background: transparent;
    border: none;
    padding-left: 10px;
    font-size: 2.2rem;
}

.heading {
    font-weight: bold;
}



/* Add some padding to .headline and .open_arrow */
.headline {
    flex-grow: 1;
    color: #f7a600 !important;
}

.open_arrow {
    float: right;
}

.btn-heading.collapsed .open_arrow:before {
    content: '\f078'; /* FontAwesome down arrow */
    font-family: 'FontAwesome';
    font-size: 1.5rem;
    color: #005680;
}

.btn-heading:not(.collapsed) .open_arrow:before {
    content: '\f077'; /* FontAwesome up arrow */
    font-family: 'FontAwesome';
    font-size: 1.5rem;
    color: #005680;
}

#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}
.loader-content {
    text-align: center;
}
.spinner {
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3498db;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}