body{
    background-color: #181818;
    width: 100%;
    height: 100%;
}

.main{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3.5rem;
    color: #f5f8fa;
    font-family: "Source Code Pro", monospace;
    font-optical-sizing: auto;
    font-weight: 300;
    font-style: normal;
    user-drag: none; 
    user-select: none;
    -moz-user-select: none;
    -webkit-user-drag: none;
    -webkit-user-select: none;
    -ms-user-select: none;
}

@media only screen and (max-width: 768px) {
    .main {
        font-size: 2.5rem;
    }
}