.video-container {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* for 16:9 aspect ratio videos */
    overflow: hidden;
}

    .video-container video {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }
 
.back-button {
    display: inline-block;
    padding: 10px 20px;
    font-size: 16px;
    color: #fff;
    background-color: #007bff;
    border: none;
    border-radius: 5px;
    text-decoration: none;
    cursor: pointer;
}
table {
    border:groove;
    padding:10px;
    margin:10px;
    width: 99%;
    border-collapse: collapse;
}
table img{
    width:100%;
}
th, td {
    padding: 8px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

    th:last-child, td:last-child {
        text-align: center;
    }