body {
    position: relative;
}

header {
    background-color: #001;
}

.audio-card {
    width: 300px;
    margin: 20px;
    height: 150px;
    background-color: rgba(162, 202, 255, 0.74);
    position: relative;
}

.audio-card-text {  
    color: #222;
    font-family: Arial;
    padding: 1em 0.6em;
    font-size: 0.8em;
}

.video-container {
    display: flex;
    flex-flow: row wrap;
    justify-content: space-around;
    max-width: 1000px;
    margin: auto;
}

iframe {
    margin: 10px;
    max-width: 400px;
}

#recording-container {
    display: flex;
    flex-flow: row wrap;
    justify-content: space-around;
    padding: 2em;
    max-width: 900px;
    margin: auto;
}

audio {
    position: absolute;
    bottom: 0;
    width: 100%;
}