challenge-landing-page/styles/main.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

img{
    display: block;
}

.page-header{
    display: flex;
    justify-content: center;
    background: #000000;
    padding: 29px 0;
}

.main-banner{
    width: 100%;
}

@media screen and (max-width: 1024px){
    #main-banner-desktop{
        display: none;
    }
}

@media screen and (min-width: 1025px){
    #main-banner-mobile{
        display: none;
    }
}