body {
    width: 100%;
    height: 75vh;
    margin: 0 auto;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

h1 {
    margin: 0;
    padding: 0;
    font-size: 2em;
    font-family: "Roboto", sans-serif;
    font-weight: 300;
    font-style: normal;
}

@media (min-width:320px) {
    /* smartphones, iPhone, portrait 480x320 phones */
}

@media (min-width:481px) {
    /* portrait e-readers (Nook/Kindle), smaller tablets @ 600 or @ 640 wide. */
}

@media (min-width:641px) {
    /* portrait tablets, portrait iPad, landscape e-readers, landscape 800x480 or 854x480 phones */
}

@media (min-width:961px) {
    /* tablet, landscape iPad, lo-res laptops ands desktops */
}

@media (min-width:1025px) {
    /* big landscape tablets, laptops, and desktops */
h1 {
        font-size: 2.6em;
    }
header {
        align-items: baseline;
    }
}

@media (min-width:1281px) {
    /* hi-res laptops and desktops */
    body {
        width: 75vh;
    }
}