body {
    margin: 0;
    background: #000;
}

video {
    position: fixed;
    top: 50%;
    left: 50%;
    min-width: 50%;
    min-height: 80%;
    width: 50%;
    height: auto;
    z-index: -100;
    transform: translateX(-50%) translateY(-50%);
    background-size: cover;
    transition: 1s opacity;
}

.stopfade {
    opacity: .5;
}

#polina {
    font-family: Agenda-Light, Agenda Light, Agenda, Arial Narrow, sans-serif;
    font-weight: 100;
    background: rgba(0, 0, 0, 0.3);
    color: white;
    padding: 2rem;
    width: 33%;
    margin: 2rem;
    float: right;
    font-size: 1.2rem;
}

h1 {
    font-size: 3rem;
    text-transform: uppercase;
    margin-top: 0;
    letter-spacing: .3rem;
}

#polina button {
    display: block;
    width: 80%;
    padding: .4rem;
    border: none;
    margin: 1rem auto;
    font-size: 1.3rem;
    background: rgba(255, 255, 255, 0.23);
    color: #fff;
    border-radius: 3px;
    cursor: pointer;
    transition: .3s background;
}

#polina button:hover {
    background: rgba(0, 0, 0, 0.5);
}

a {
    display: block;
    width: 40%;
    color: #fff;
    padding: .4rem;
    margin: 1rem auto;
    font-size: 1.3rem;
    text-decoration: center;
    background: rgba(255, 255, 255, 0.23);
    color: #fff;
    border-radius: 3px;
    cursor: pointer;
    transition: .3s background;
    text-align: center;
}

a:hover {
    background: rgba(0, 0, 0, 0.9);
    text-align: center;
}

@media screen and (max-width: 500px) {
    div {
        width: 70%;
    }
}

@media screen and (max-device-width: 800px) {
    video {
        position: fixed;
        top: 50%;
        left: 50%;
        min-width: 80%;
        min-height: 80%;
        width: 80%;
        height: auto;
        z-index: -100;
        transform: translateX(-50%) translateY(-50%);
        background-size: cover;
        transition: 1s opacity;
    }
    #bgvid {
        display: grid;
    }
}