*,
*:before,
*:after {
    box-sizing: border-box;
}
html,
body {
    min-height: 100vh;
    height: 100%;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
}

body {
    font-size: 1rem;
    font-family: 'Avenir Next', Avenir, "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: 400;
    line-height: 1.5;
    color: #e7eef4;
    background-color: #040404;

    padding: 2rem;
    -moz-display: flex;
    -moz-align-items: center;
    -moz-justify-content: center;
    -moz-flex-wrap: wrap;
    -webkit-display: flex;
    -webkit-align-items: center;
    -webkit-justify-content: center;
    -webkit-flex-wrap: wrap;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
}

@media (min-width: 45em) {
    html {
        font-size: 20px;
    }

    body {
        padding: 4rem;
    }
}

a {
    color: #3a9085;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

body:before,
body:after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

body:before {
    background: url('gato-del-raval.jpg') no-repeat center center;
    background-size:  auto 100%;
    z-index: -1;
}

@media (min-width: 35em) {
    body:before {
        background-size: cover;
    }
}

body:after {
    background: #040404;
    opacity: .6;
    z-index: -1;
}

article,
footer {
    max-width: 35em;
    flex: 0 0 100%;
}

footer {
    margin-top: 2rem;
    padding-bottom: 2rem;
    align-self: flex-end;
}

small {
    font-size: .7rem;
}

h1 {
    font-size: 2.8rem;
    font-weight: 900;
    line-height: 1.2;
    margin-top: 0;
}

p {
    margin: 0 0 1rem;
}

p:last-of-type {
    margin-bottom: 0;
}