* {
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
}

header {

    position: relative;
    height: auto;
}

#banner-bg {
    background-size: cover;
    background-position: center;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

#banner-fg {
    width: 100%;
    height: auto;
    position: relative;
    z-index: 2;
    margin: 0 auto;
    display: block;
}

.form-content {
    position: absolute;
    z-index: -1;
    width: 100%;
    background-color: white;
    padding-top: 18%;
}

hr {
    margin-top: 3%;
    border-top: 0.1px solid #ADC911;
}

footer {
    margin-top: 2%;
    text-align: center;
    margin-bottom: 1%;
}

footer img {
    width: 20%;
}

.main-content {
    margin: auto;
    margin-top: 2%;

    width: 50%;
}

@media (min-width:320px) {

    /* smartphones, iPhone, portrait 480x320 phones */
    #banner-fg {
        width: 100%;
    }
}

@media (min-width:481px) {

    /* portrait e-readers (Nook/Kindle), smaller tablets @ 600 or @ 640 wide. */
    #banner-fg {
        width: 100%;
    }
}

@media (min-width:641px) {

    /* portrait tablets, portrait iPad, landscape e-readers, landscape 800x480 or 854x480 phones */
    #banner-fg {
        width: 90%;
    }
}

@media (min-width:961px) {

    /* tablet, landscape iPad, lo-res laptops ands desktops */
    #banner-fg {
        width: 80%;
    }
}

@media (min-width:1025px) {

    /* big landscape tablets, laptops, and desktops */
    #banner-fg {
        width: 70%;
    }
}

@media (min-width:1281px) {

    /* hi-res laptops and desktops */
    #banner-fg {
        width: 60%;
    }
}