.eiu-course-listing { border: 1px solid #bbbbbb; }
.eiu-course-listing details { border-top: 1px solid #bbbbbb; }
.eiu-course-listing details:first-child { border-top: none; }
.eiu-course-listing summary {
    display: flex;
    align-items: center;
    padding: 8px 16px;
    background: #f7f7f7;
    cursor: pointer;
    list-style: none;
    font-size: 1em;
}
.eiu-course-listing summary::-webkit-details-marker { display: none; }
.eiu-course-listing summary::marker { display: none; }
.eiu-course-code {
    font-weight: bold;
    color: #103570;
    min-width: 110px;
    flex-shrink: 0;
}
.eiu-course-name { flex-grow: 1; }
.eiu-course-toggle { color: #696c6e; flex-shrink: 0; font-size: 1.2em; margin-left: 16px; }
.eiu-course-listing summary .eiu-course-toggle::after { content: '+'; }
.eiu-course-listing details[open] summary .eiu-course-toggle::after { content: '\2212'; }
.eiu-course-details { padding: 16px; }
.eiu-course-details p { margin: 4px 0 12px; }
.eiu-course-details strong { display: block; font-size: 1.1em; margin-top: 8px; }