body {
    font-family: Arial, sans-serif;
    background-color: #333333;
    margin: 0;
    padding: 20px;
}

h1 {
    color: #ffffff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

#gallery {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin: 20px;
}

#videocontainer video {
    width: 100%;
    height: 100%;
    display: block;
    filter: brightness(0.6);
}

#videocontainer {
    position: relative;
    max-width: 370px;
    max-height: 300px;
    margin: 13px;
    border: 1px solid #ffffff;
}

#videocontainer:hover {
    background-color: #444444;
    border: 1px solid #02d85b;
    cursor: pointer;
}

#playButton {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    width: 120px;
    height: 120px;
    margin: 0;
}

#imagecontainer {
    position: relative;
    max-width: 370px;
    max-height: 300px;
    margin: 13px;
    border: 1px solid #ffffff;
}

#imagecontainer img {
    width: 100%;
    height: 100%;
    display: block;
}