.error {
    color: red;
}

.sponsor-thumb img {
    width: 150px;
    height: 100px;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

.course-thumb img {
    height: 300px;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

.instructor-thumb img {
    width: 250px;
    height: 250px;
    object-fit: cover;
    display: block;
    margin: 0 auto;
}
.sftl-thumb img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    display: block;
    margin: 0 auto;
}
.sfl-thumb img {
    height: 300px;
    object-fit: cover;
    display: block;
    margin: 0 auto;
}

.header-logo {
    width: 200px;
    height: 60px;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

.about-thumb img {
    width: 500px;
    height: 500px;
    object-fit: cover;
}