body {
    max-width: 30em;
    margin: 2em auto 2em auto;
}

html {
    background-color: black;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    text-align: center;
    color: white;
}

img {
    padding-left: 10%;
    padding-right: 10%;
    margin-bottom: 1em;
}

.button  {
    border: 1.5px solid gainsboro;
    border-radius: 1em;
    padding: 0.5em;
    display: block;
    margin-left: 2em;
    margin-right: 2em;
    text-decoration: none;
    font-size: 1.25em;
    color: gainsboro;
}

a {
    color: gainsboro;
}

p a {
    font-size: 1em;
    text-decoration: underline;

}

a:hover {
    color: gray;
}

footer {
    position: absolute;
    bottom: 0;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 10px;
    text-align: center;
    max-width: 35em;
    width: 100%;
    text-decoration: underline;
    font-size: small;
}