* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    overflow: hidden;
}

.hero {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

#soundToggleBtn {
    position: absolute;
    bottom: 20px;
    right: 20px;
    z-index: 10;
    background-color: rgba(0, 0, 0, 0.6);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

#soundToggleBtn:hover {
    background-color: rgba(0, 0, 0, 0.8);
}

#soundToggleBtn svg {
    fill: white;
    width: 24px;
    height: 24px;
}