practice-time-landing-page/css/index.css

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

.page-header{
    display: flex;
    justify-content: center;
    width: 100%;
    padding: 28px 0;
    background-color: #000;
}

.header-logo{
    display: block;
}

.Banner-principal{
    width: 100%;
}

@media screen and (max-width: 414px){
    .Banner-principal-desktop{
        display: none;
    }
}

@media screen and (min-width: 415px){
    .Banner-principal-mobile{
        display: none;
    }
}