Problem with responsive header

Problem with responsive header

by Byron Varela Mora -
Number of replies: 1

Hi, I'm new in moodle. I have an image in the header, but the image is shown cropped, it currently appears as follows:


And the whole picture is this:


How can I configure the image to fit the screen of the device? My Version of moodle is Moodle 3.9.3+ (Build: 20201127)
This is my css theme:
h1, h2, h3, h4, h5, h6, .h1, .h2, .path-calendar .maincalendar .calendar-controls .current, .h3, .h4, .h5, .h6 {
    margin-bottom: .5rem;
    font-family: Roboto;
    font-weight: 500;
    line-height: 1.2;
    color: RGB(0, 74, 151);
}
body {
    font-family: Roboto;
}
li.activity.label p, td.label p {
    color: #000000;
}
.theme-title.style-1::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 1px;
    border-bottom: solid 3px RGB(0, 168, 225);
}

.btn-primary.btn-secondary, .btn-default.btn-primary, input[type="submit"].btn-secondary, input.btn-default[type="submit"], button[type="submit"].btn-secondary, button.btn-default[type="submit"], input.btn-primary.btn-secondary, input.btn-default.btn-primary, button.btn-primary.btn-secondary, button.btn-default.btn-primary {
    color: #fff !important;
    background-color: RGB(225, 108, 12);
    border-color: RGB(208, 97, 6);
}
.btn-primary, input[type="submit"], button[type="submit"], input.btn-primary, button.btn-primary {
    color: #fff !important;
    background-color: RGB(225, 108, 12);
    border-color: RGB(208, 97, 6);
}
.theme-tabs .nav-tabs .nav-link.active, .moodle-dialogue-base .nav-tabs .nav-link.active {
    background-color: RGB(0, 74, 151);
    border-color: RGB(0, 74, 151);
    color: #fff !important;
}
.theme-tabs .nav-tabs, .moodle-dialogue-base .nav-tabs {
    list-style: none!important;
    border-bottom-color: RGB(225, 108, 12);
    border-bottom-width: 2px;
}
.theme-iconnav li a .static-icon, .theme-iconnav li .link-replace .static-icon {
    background-color: RGB(0, 168, 225);
    border-bottom: solid 1px rgba(0, 74, 151,.2);
}

.theme-iconnav li a:hover .static-icon, .theme-iconnav li .link-replace:hover .static-icon, .theme-iconnav li a:focus .static-icon, .theme-iconnav li .link-replace:focus .static-icon {
    background-color: RGB(0, 168, 225);
    border-bottom-color: transparent;
}

.theme-iconnav li a .text, .theme-iconnav li .link-replace .text {
    background-color: rgba(0, 168, 225,.9);
}

//OCULTA EL MENU DE PAGINAS


.bg-divisor {
margin-top: 5px;
background-color:  #f4f4f4;
}


.li-facebook a {
    background: url(/theme/mb2nl/pix//customimage/BTN_facebook.png) no-repeat;
    width: 32px;
    height: 32px!important;
    color: transparent!important;
    background-size: 32px;
}
.li-youtube-play a {
     /* background-color: #3b5998; */
    background: url(/theme/mb2nl/pix//customimage/BTN_youtube.png) no-repeat;
    width: 32px;
    height: 32px!important;
    color: transparent!important;
    background-size: 32px;
}
.li-globe a {
     /* background-color: #3b5998; */
    background: url(/theme/mb2nl/pix//customimage/BTN_web.png) no-repeat;
    width: 32px;
    height: 32px!important;
    color: transparent!important;
    background-size: 32px;
}

i.fa.fas.fa-question {
    font-size: 36px;
    line-height: 45px;
}
.main-menu>.lang-item {
float:left!important;
margin-left: 80px;
}
.main-menu>.bookmarks-item{
display: none;
}

//afecta flechas del carrusel
.owl-nav{
display: contents;
}
.carousel-mode.nlearning .theme-slider-img {
    margin: 0;
    max-height: 200px;
}
.owl-carousel .owl-item img {
    height: 200px;
}
.msjEnrolSelf{
    font-size: 25px;
    color: #004a97;
}
.min-height-carousel {
min-height: 300px;
}
.min-height-carousel .owl-item img {
    height: 330px;
}
#main-header {
background-image: url('/theme/mb2nl/pix//customimage/Ulula-banner.jpg');
     height: 200px;   
     background-size: cover;
}
@media only screen and (max-width: 768px) {
    #main-header {
        height: 100px;
    }
}
#module-161 {
display:none;
}
.theme-hide-sidebar {
    right: 0!important;
    left: auto;
}
.fixed-bar {
//    right: -500px;/
top: 700px;
}
.theme-iconnav li a .static-icon, .theme-iconnav li .link-replace .static-icon {
height: 43px;
}
.side-post {
    display: none;
}
@media (min-width: 768px) {
.content-col {
    flex: 0 0 75%!important;
    min-width: 75%!important;
}
}
.theme-iconnav li a .text, .theme-iconnav li .link-replace .text {
height: 43px;
}
.header-tools-link.tool-search {
display:none;
}
.wikisearch {
    display: none;
}
//Habilitar Botón de Matricula de Cursos de Páginas descriptivas
.matriculaBTN{
 //  display: block;/
 display: none;
}
.videointerno {
   
}
.frontsec1{
max-width: 1240px;
width: 100%;
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
margin-top:30px;
}

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