html {
    background-image: url('img.jpg');
    background-position: center;
    background-size: cover;
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-color: #24272b;
    color: white;
    text-align: center;
    overflow: hidden;
}

h1 {
    text-shadow: 0.1em 0.1em 0.2em black;
    font-size: 25px;
    color: yellow;
}

a {
    text-decoration: none;
}

#progress {
    display: block;
}

#menu {
    display: block;
}

#tools {
    display: none;
}

#mods {
    display: none;
}

#console {
    display: none;
}

.btn {
    background-color: #f2f4f5;
    color: black;
    width: 227px;
    height: 46px;
    padding-bottom: 5px;
    text-align: center;
    font-size: 20px;
    margin-top: 8px;
    margin-bottom: 8px;
    margin-left: 5px;
    margin-right: 5px;
    border-style: none;
    transition-duration: 0.4s;
    cursor: pointer;
    border-radius: 4px;
}

.btn:hover {
    background-color: #03fc1c;
}

.btn-alt {
    background-color: #f2f4f5;
}

.btn-alt:hover {
    background-color: #03fc1c;
}