*{
    margin: 0;
    padding: 0; 
    box-sizing:border-box;
}
.pageheader{
    background-color: #000000;
    height: 101px;
    width: 100%;
    display: flex;
    justify-content: center;
    padding: 29px;}

.imageheader{
    justify-content: center;
}

.main-bannermobile{
    width: 100%;
}

.main-banner{
    width: 100%;
}

@media (max-width:414px) {
    .main-banner{
        display: none;
    }
}

@media (min-width:415px) {
    .main-bannermobile{
        display: none;
    }
}