body {
    background: url(../images/mario-background.jpg);
    background-position: left;
    background-repeat: repeat;
    background-attachment: fixed;
    text-align: center;
    font-family: Arial, Helvetica, sans-serif;
}

.game-button {
    margin: 10px;
}

.container {
    margin: auto;
}

h1 {
    margin: auto;
    margin-bottom: 20px;
}

#add-gif {
    margin-bottom: 10px;
}

.gif {
    margin-bottom: 10px;
    
}

p {
    margin-bottom: -3px;
}