* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-align: center;

}

html {
    font-family: Tahoma, Verdana, sans-serif;
    font-size: calc(15px + 0.390625vw);
    
}

h1{
    text-align: center;
    font-family: Arial, Helvetica, sans-serif;
}

.banner{
    width: 45%;
}

@media (max-width:1200px) {
    .banner {
        width: 70%;
    }
}

@media (max-width:900px) {
    .banner{
        width: 100%;
    }
}