body { font-family: Arial, sans-serif; background: #f9f9f9; margin: 0; padding: 0; }
.container { width: 800px; margin: 50px auto; text-align: center; }
input[type="text"] { width: 400px; padding: 8px; }
button { padding: 8px 12px; }
.video-list { list-style: none; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; }
.video-list li { margin: 10px; width: 220px; text-align: left; }
.video-list img { width: 100%; cursor: pointer; }
#player { margin-top: 20px; }

article{
    text-align:center
}