.header {
    min-height:50px;
    background-color:#005294;
    position:fixed;
    top:0px;
    left:0px;
    right:0px;
    z-index:1000;
}
.row_1 {
    clear: both;
    min-height: 32px;
    margin:10px;
}
img.image1 {
    margin-left: auto;
    margin-right:auto;
    display:block;
}
img.image2 {
    margin-left: auto;
    margin-right:auto;
    display:block;
}
@media only screen and (min-width : 768px) {
    .header {
        min-height: 50px;
        width:100%;
    }
    .row_1 {
        clear: both;
        min-height: 50px;
        margin-left:10px;
        margin-right:10px;
    }
    img.image1 {
        width: 500px;
    }
    img.image2 {
        width: 500px;
    }
}
@media only screen and (min-width : 1024px) {
    .header {
        min-height: 50px;
        width:100%;
    }
    .row_1 {
        margin-right: 10px;
        min-height:50px;
    }
    img.image1 {
        width: 500px;
    }
    img.image2 {
        width: 500px;
    }
}