.lecturetitle {
    padding: 0;
    font-size: 1.3em;
    font-weight: bold;
    color: #ffffff;
}

#yearlogo {
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0;
    margin: 20px 0;
    text-align: center;
}

#yearlogo img {
    width: auto;
    height: 60px;
}

#header-title {
    margin: 5px 10px;
    text-align: left;
}

#header {
    position: relative;
    z-index: 0;
    align-content: flex-start;
    width: auto;
    height: auto;
    min-height: 200px;
    padding: 0;
    margin: 0;
    text-align: center;
}

#header::before {
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    width: 100%;
    height: 100%;
    content: "";
    background-color: #015fa7;
    background-image: url("../image/background.jpg");
    filter: blur(5px);
    background-repeat: no-repeat;
    background-position: 50% 55%;
    background-size: cover;
    object-fit: cover;
}

.flex-wrap {
    display: flex;
    flex-wrap: wrap;
}

#si-logo {
    height: auto;
}

#si-logo img {
    height: 50px;
}

#date-place {
    place-content: flex-end center;
    width: 100%;
    margin-right: 1em;
    font-size: 1em;
    font-weight: bold;
    color: #000000;
    text-align: right;
}

#date{
    justify-content: center;
}

#date p{
    margin: 0 5px;
}

#footer {
    position: sticky;
    top: 100vh;
    width: 100%;
    height: auto;
    padding: 1.0em 0;
    clear: both;
    font-size: 1em;
    color: #ffffff;
    text-align: center;
    background-color: #4169e1;
}

#copyright {
    margin: 1em;
}

#footer-bottom {
    margin-bottom: 1em;
}

#footer-bottom a {
    margin: 0 5px;
    color: #ffffff;
}

ul {
    padding: 0 3em;
}