body {
    background-color: #000;
    font-family: 'Helvetica Neue', sans-serif;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.video-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

video {
    width: 95%;
    max-width: 1000px; /* 必要に応じてサイズを調整 */
    height: auto;
    border: 1px solid #fff;
    border-radius: 8px;
}


.container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.header{
    background-color: #000;
    color: white;
    text-align: center;
    padding: 1em;
    font-size: 14px;
}
.footer {
    background-color: #000;
    color: white;
    text-align: center;
    padding: 1em;
}

.main {
    flex: 1;
    padding: 1em;
    background-color: #000;
}