body {
    font-size: 1.6em;
    text-align: center;
}

button {
    display: block;
    margin: 0 auto;
    font-size: 1.5em;
    border: 1px solid (255,255,255,.4);
    padding: 1%;
    border-radius: 20px;
    background: rgba(0,0,0,.8);
    color: rgba(255,255,255,.8);
}

button2 {
    display: block;
    margin: 0 auto;
    font-size: 1.5em;
    border: 1px solid;
    border-color: lightgreen;
    padding: 1%;
    border-radius: 20px;
    background: rgba(0,0,0,.8);
    color: rgba(255,255,255,.8);
}

button:hover {
    background: rgba(100,100,100,.8);
}

#picture {
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
    width: 100%;
    height: 100%;
}

h1 {
    background-color: rgba(0,0,0,.6);
    color: antiquewhite;
    text-align: center;
    display: inline-block;
    padding: 6px;
}

p {
    color: LightGreen;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    text-align: center;
    display: inline-block;
    padding: 6px;
}

z {
    color: whitesmoke;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    text-align: center;
    display: inline-block;
    padding: 6px;
}

footer {
    left: 0;
    bottom: 0;
    width: 100%;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 10px;
    text-align: center;
}