body{
    margin: 0;
    background-color: #000;
    font-family: monospace;
    padding: 0;
}
.main-img{
    width: 100%;
}
main{
    margin: 0 auto;
    width: 720px;
    min-width: 720px;
    max-width: 720px;
}
.disc-note{
    color: #ff0000;
    font-size: 25px;
    text-align: center;
}


@media(max-width: 719px){
    main{
        width: 100%;
        min-width: 100%;
        max-width: 100%;
    }
}