body {
    font-family: sans-serif;
    background: #f7f7f7;
    margin: 0;
    padding: 0;
}

.header {
    background: #000;
    color: white;
    padding: 20px;
}

.header a {
    color: #ddd;
    float: right;
}

.content {
    margin: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}
.video-item {
    flex: 1 1 300px; /* cada video ocupa mínimo 300px */
    max-width: 320px;
}

video {
    width: 100%;
    height: auto;
}

.login-container {
    max-width: 300px;
    margin: 100px auto;
    padding: 20px;
    background: white;
    box-shadow: 0px 0px 10px #ccc;
    border-radius: 5px;
}

input, button {
    padding: 10px;
    margin: 10px 0;
    width: 90%;
}

.error {
    color: red;
}