html {
    height: 100%;
}

body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: url('czarnobyl.png') no-repeat center center fixed;
    background-size: cover;
    min-height: 100vh;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding-top: 50px;
    padding-bottom: 20px;
    box-sizing: border-box;
}

.footer {
    margin-top: auto;
}

.footer a {
    color: #fff;
    text-decoration: none;
    font-size: 2em;
    text-shadow: 1px 1px 2px #000;
}

.footer a:hover {
    text-decoration: underline;
}

.container {
    text-align: center;
}

h1 {
    color: #fff;
    font-size: 4em;
    text-shadow: 2px 2px 4px #000;
    margin: 0;
}