body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #333;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

#video {
    display: none;
    width: 100%;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
}

.mdc-button {
    color: #fff;
    background-color: #3f51b5;
}

.mdc-button:hover {
    background-color: #303f9f;
}

header {
    display: flex;
    align-items: center;
    padding: 20px;
    background-color: #444;
    width: 100%;
    padding-left: 50px; 
    position: absolute;
    top: 0;
}

header h1 {
    margin-left: 20px;
    color: #fff;
}

header img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}