html, body, iframe {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-size: 16px;
    vertical-align: baseline;
    background: transparent;
    width: 100%;
    height: 100%;
    overflow-y: scroll;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
}

::-webkit-scrollbar
{
    display: none;
}

h4 {
    color: #FFFFFF;
}

.navbar {
    z-index: 2;
    width: 100vw;
    height: 10vh;
    position: fixed;
    top: 0;
    left: 0;
    background: #3b3b3b;
}

.navbar-text {
    font-family: 'Helvetica', Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    color: #FFFFFF;
    font-size: 1.6rem;
}

.overlay {
    position: relative;
    top: 10vh;
    background: rgba(41, 41, 41, 0.7);
    padding: 2rem 2rem;
    z-index: 1;
}

.game-background {
    -webkit-overflow-scrolling: touch;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
}

.text-white {
    color: #FFFFFF;
}

.back-button {
    width: 50%;
    font-size: 0.8rem;
    background-color: #DA1B19;
    padding: 0.8rem 0 0.8rem 0;
    border: none;
    border-radius: 4px;
    box-shadow: 0 0.5rem 1rem 0 rgba(0, 0, 0, .7);
}

.back-button:hover {
    cursor: pointer;
}