tu as changer le design, ne change rien sauf les couleurs:
/**********************************
    AEMJ Stylesheet
**********************************/

body {
    overflow-x: hidden !important;
    font-family: 'Source Sans Pro', sans-serif !important;
    position: relative;
}

body::before {
    background: #FFE0D0;
    position: absolute;
    left: 0;
    width: 100%;
    right: 0 !important;
    top: 0;
    content: "";
    height: 15%;
    z-index: 1;
}

p, li, ul, button, input {
    font-family: 'Source Sans Pro', sans-serif !important;
    font-size: 14px;
    color: #606060 !important;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Raleway', sans-serif !important;
}

a:focus,
input:focus,
button:focus {
    outline: none !important;
}

.container {
    width: 1280px;
}

.container .container {
    width: 100% !important;
}

.pkp_structure_page {
    background: #FFFFFF none repeat scroll 0 0;
    padding: 0 !important;
    -webkit-box-shadow: 0 1px 5px rgba(0,0,0,0.2) !important;
    -moz-box-shadow: 0 1px 5px rgba(0,0,0,0.2) !important;
    -o-box-shadow: 0 1px 5px rgba(0,0,0,0.2) !important;
    box-shadow: 0 1px 5px rgba(0,0,0,0.2) !important;
    position: relative;
    z-index: 99;
}

.pkp_structure_main {
    float: right;
}

a,a:hover {
    -webkit-transition: all 0.2s linear;
    -moz-transition: all 0.2s linear;
    -ms-transition: all 0.2s linear;
    -o-transition: all 0.2s linear;
    transition: all 0.2s linear;
}

// Hover Navigation
.navbar-default .navbar-nav > li.dropdown:hover > a,
.navbar-default .navbar-nav > li.dropdown:hover > a:hover,
.navbar-default .navbar-nav > li.dropdown:hover > a:focus {
    background-color: rgb(231, 231, 231);
    color: rgb(85, 85, 85);
}

li.dropdown:hover > .dropdown-menu {
    display: block;
}

#headerNavigationContainer {
    background: #D73C2C none repeat scroll 0 0;
    border-bottom: 5px solid #CA2F1F !important;
    border-top: none !important;
    border-left: none !important;
    border-right: none !important;
    margin-bottom: 0 !important;
    -webkit-border-radius: 0 !important;
    -moz-border-radius: 0 !important;
    -o-border-radius: 0 !important;
    -ms-border-radius: 0 !important;
    border-radius: 0 !important;
}

.navbar-brand {
    height: 70px !important;
    margin: 20px 0 !important;
    padding: 0 !important;
}

.navbar-default .navbar-nav > li > a, .header_view_pdf .navbar-nav > li > a {
    background: #B71C0C none repeat scroll 0 0 !important;
    margin-right: 7px;
    -webkit-border-radius: 2px 2px 0 0 !important;
    -moz-border-radius: 2px 2px 0 0 !important;
    -o-border-radius: 2px 2px 0 0 !important;
    -ms-border-radius: 2px 2px 0 0 !important;
    border-radius: 2px 2px 0 0 !important;
    padding: 5px 20px 5px 20px;
    text-transform: uppercase;
    font-size: 11px;
    font-weight: 800;
    color: rgba(255,255,255,0.9) !important;
    font-family: 'Raleway', sans-serif !important;
    letter-spacing: 1px !important;
}

.navbar-default .navbar-nav > li > a .fa {
    font-size: 16px;
    margin: 0px 10px 0px 0px;
}

.navbar-default .navbar-nav > li:hover a,
.navbar-default .navbar-nav > li:focus a {
    background: #FFCCBC none repeat scroll 0 0 !important;
    color: #212121 !important;
}

.navbar-default .navbar-nav > li ul {
    background: #FFCCBC none repeat scroll 0 0 !important;
    border: none !important;
    -webkit-box-shadow: 0 5px 5px -5px rgba(0,0,0,0.5) !important;
    -moz-box-shadow: 0 5px 5px -5px rgba(0,0,0,0.5) !important;
    -o-box-shadow: 0 5px 5px -5px rgba(0,0,0,0.5) !important;
    box-shadow: 0 5px 5px -5px rgba(0,0,0,0.5) !important;
}

.navbar-default .navbar-nav > li ul li a {
    color: #D73C2C !important;
    font-size: 11px !important;
    font-weight: 400;
    text-transform: uppercase !important;
    letter-spacing: 1px;
    margin: 10px 0;
}

.navbar-default .navbar-nav > li ul li a:hover,
.navbar-default .navbar-nav > li ul li a:focus {
    color: #D73C2C !important;
}

.navbar-default .navbar-nav > li ul li a .fa {
    position: relative;
    left: -5px;
    font-size: 9px;
}

.searchbar {
    margin: 32px auto 0 !important;
}

.searchbar input[type="text"] {
    width: 200px !important;
    height: 30px !important;
    -webkit-border-radius: 2px;
    -moz-border-radius: 2px;
    -o-border-radius: 2px;
    -ms-border-radius: 2px;
    border-radius: 2px;
    border: none !important;
    -webkit-box-shadow: 0 1px 3px rgba(0,0,0,0.3) inset;
    -moz-box-shadow: 0 1px 3px rgba(0,0,0,0.3) inset;
    -o-box-shadow: 0 1px 3px rgba(0,0,0,0.3) inset;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3) inset;
}

.searchbar .btn-default {
    background: #D4AC71 !important;
    border: none !important;
    height: 30px !important;
    -webkit-border-radius: 2px !important;
    -moz-border-radius: 2px !important;
    -o-border-radius: 2px !important;
    -ms-border-radius: 2px !important;
    border-radius: 2px !important;
    color: #FFFFFF !important;
    font-size: 11px !important;
    text-transform: uppercase !important;
    font-weight: 800 !important;
    letter-spacing: 1px !important;
    position: relative;
}

.searchbar form {
    display: inline-block;
    width: 100%;
    text-align: right;
}
.top-bar {
    background: #CF3424 !important;
}

.top-bar-contact {
    border-left: 1px solid #C92E1E;
}

.top-bar-contact a {
    color: rgba(255,255,255,0.5) !important;
    font-weight: 600;
}

.top-bar-contact a:hover,
.top-bar-contact a:focus {
    color: #FFFFFF !important;
}

.top-bar-contact a .fa {
    position: relative;
    display: inline-block;
    margin: 0px 5px 0px 0px;
}

.top-bar-left {
    float: left !important;
    margin: 0 !important;
    height: 40px !important;
    line-height: 40px;
    list-style: none !important;
    padding: 0px 0px 0px 20px !important;
}

.top-bar-left li {
    color: rgba(255,255,255,0.5) !important;
    border-right: 1px solid #C92E1E;
    font-weight: 600;
    padding: 0px 15px 0px 0px;
}

.searchbar p {
    display: inline-block;
    width: 100%;
    text-align: right;
    padding: 0 15px 0 0;
}

.searchbar p a {
    text-transform: capitalize;
    font-size: 14px;
    color: rgba(255,255,255,0.5) !important;
}

.searchbar p a:hover,
.searchbar p a:focus {
    color: #FFFFFF !important;
    background: rgba(0,0,0,0) none repeat scroll 0 0 !important;
    text-decoration: none !important;
}

footer p {
    text-align: center !important;
    margin: 0 !important;
    color: #999999 !important;
    text-transform: capitalize;
}

.breadcrumbs-box {
    padding: 10px 0 !important;
    background: #F5F5F5 !important;
}

.breadcrumbs-box .breadcrumb {
    margin-bottom: 0 !important;
}

.breadcrumbs-box {
    padding: 10px 0 !important;
    background: #F5F5F5 !important;
    border-bottom: 5px solid #DDDDDD;
    margin: 0 auto 40px !important;
    display: inline-block;
    width: 100%;
}

.breadcrumbs-box a {
    background: rgba(0,0,0,0) none repeat scroll 0 0 !important;
    text-decoration: none !important;
    color: #777777 !important;
}

.social-box {
    line-height: 0;
}

.social-box ul {
    padding: 0 !important;
    margin: 0 !important;
    display: inline-block;
    width: 100%;
}

.social-box ul li {
    float: right;
    list-style: none !important;
}

.social-box ul li a {
    margin: 0 10px 0 0;
    display: inline-block !important;
    padding: 0 15px;
    height: 35px;
    line-height: 35px;
    text-transform: capitalize;
    font-size: 11px;
    color: #FFFFFF !important;
    -webkit-border-radius: 2px;
    -moz-border-radius: 2px;
    -o-border-radius: 2px;
    -ms-border-radius: 2px;
    border-radius: 2px;
    font-weight: 800;
}

.social-box ul li:nth-child(1) a {
    background: rgba(238, 147, 19, 0.65) none repeat scroll 0 0 !important;
}

.social-box ul li:nth-child(1) a:hover,
.social-box ul li:nth-child(1) a:focus {
    background: #EE9313 none repeat scroll 0 0 !important;
}

.social-box ul li:nth-child(2) a {
    background: rgba(0, 171, 240, 0.65) none repeat scroll 0 0 !important;
}

.social-box ul li:nth-child(2) a:hover,
.social-box ul li:nth-child(2) a:focus {
    background: #00ABF0 none repeat scroll 0 0 !important;
}

.social-box ul li:nth-child(3) a {
    background: rgba(70, 98, 158, 0.65) none repeat scroll 0 0 !important;
}

.social-box ul li:nth-child(3) a:hover,
.social-box ul li:nth-child(3) a:focus {
    background: #4867AA none repeat scroll 0 0 !important;
}

.social-box ul li a .fa {
    font-size: 15px;
    position: relative;
    top: 2px;
    left: -2px;
    margin: 0px 10px 0px 2px;
}

.widget-title,
.blockTitle {
    background: #D73C2C none repeat scroll 0 0 !important;
    color: #FFFFFF;
    font-size: 13px;
    padding: 10px 5px 10px 20px;
    -webkit-border-radius: 2px;
    -moz-border-radius: 2px;
    -o-border-radius: 2px;
    -ms-border-radius: 2px;
    border-radius: 2px;
    position: relative;
    text-transform: uppercase;
    font-weight: 600;
    margin: 0 auto 30px;
    letter-spacing: 1px;
    width: 100% !important;
    display: inline-block;
}

.widget-title:after, .widget-title:before,
.blockTitle:after, .blockTitle:before {
    top: 100%;
    left: 50%;
    border: solid transparent;
    content: " ";
    height: 0;
    width: 0;
    position: absolute;
    pointer-events: none;
}

.widget-title::after,
.blockTitle::after {
    border-color: rgba(136, 183, 213, 0);
    border-top-color: #D73C2C;
    border-width: 15px;
    left: 10px;
    top: 32px;
}

.magic-sidebar .panel {
    border: none !important;
    -webkit-border-radius: 0 !important;
    -moz-border-radius: 0 !important;
    -o-border-radius: 0 !important;
    -ms-border-radius: 0 !important;
    border-radius: 0 !important;
    -webkit-box-shadow: none !important;
    -moz-box-shadow: none !important;
    -o-box-shadow: none !important;
    box-shadow: none !important;
    margin: 0 auto 10px;
}

.magic-sidebar .panel-heading {
    background: none !important;
    border: none !important;
    -webkit-border-radius: 0 !important;
    -moz-border-radius: 0 !important;
    -o-border-radius: 0 !important;
    -ms-border-radius: 0 !important;
    border-radius: 0 !important;
    padding: 0 !important;
}

.magic-sidebar .panel-heading .panel-title a {
    background: #EFEFEF none repeat scroll 0 0;
    font-size: 11px;
    text-transform: uppercase;
    font-weight: 800;
    color: #777777;
    display: inline-block !important;
    width: 100%;
    padding: 8px 8px 8px 16px;
    -webkit-border-radius: 2px; !important;
    -moz-border-radius: 2px; !important;
    -o-border-radius: 2px; !important;
    -ms-border-radius: 2px; !important;
    border-radius: 2px; !important;
    letter-spacing: 1px;
    text-decoration: none !important;
}

.magic-sidebar .panel-heading .panel-title a .fa {
    font-size: 13px;
    margin: 0px 10px 0px 0px;
}

.magic-sidebar .panel-heading .panel-title a:hover,
.magic-sidebar .panel-heading .panel-title a:focus {
    background: #C5C5C5 none repeat scroll 0 0;
}

.magic-sidebar .panel-body {
    border: none !important;
}

.magic-sidebar .panel-body ul {
    padding: 0;
    list-style: none;
}

.magic-sidebar .panel-body ul li a {
    color: #E38676;
    display: inline-block;
    position: relative;
    margin: 0 auto 8px;
    text-decoration: none;
    text-transform: capitalize;
    font-weight: 600;
    padding: 2px 15px 2px 5px;
    -webkit-transition: all 0.2s linear;
    -moz-transition: all 0.2s linear;
    -ms-transition: all 0.2s linear;
    -o-transition: all 0.2s linear;
    transition: all 0.2s linear;
}

.magic-sidebar .panel-body ul li a .fa {
    color: #BBBBBB;
    font-size: 11px;
    position: relative;
    left: 0;
    margin: 2px 10px 2px 2px;
}

.magic-sidebar .panel-body ul li a:hover,
.magic-sidebar .panel-body ul li a:focus {
    background: #E8E8E8 none repeat scroll 0 0;
    color: #434343;
    -webkit-transition: all 0.2s linear;
    -moz-transition: all 0.2s linear;
    -ms-transition: all 0.2s linear;
    -o-transition: all 0.2s linear;
    transition: all 0.2s linear;
}

#navigationUser .dropdown-toggle {
    color: #FFFFFF;
}

#navigationUser li a .badge {
    background: #FFFFFF !important;
    color: #CF3424 !important;
}

.block_custom {
    border: none !important;
    -webkit-box-shadow: none !important;
    -moz-box-shadow: none !important;
    -o-box-shadow: none !important;
    box-shadow: none !important;
}

.accordion-container {
    display: inline-block;
    width: 100%;
}

.block_make_submission_link {
    background: rgba(238, 147, 19, 0.65) none repeat scroll 0 0 !important;
    display: inline-block !important;
    width: 100% !important;
    text-transform: uppercase !important;
    font-weight: 800 !important;
    font-size: 12px !important;
    font-family: 'Raleway', sans-serif !important;
    color: #FFFFFF !important;
    border: none !important;
    -webkit-border-radius: 2px !important;
    -moz-border-radius: 2px !important;
    -o-border-radius: 2px !important;
    -ms-border-radius: 2px !important;
    border-radius: 2px !important;
    text-decoration: none !important;
}

.block_make_submission_link:hover,
.block_make_submission_link:focus {
    background: rgba(238, 147, 19, 0.8) none repeat scroll 0 0 !important;
}

.pkp_structure_page .block_make_submission,
.pkp_structure_page .block_make_submission .content {
    -webkit-box-shadow: none !important;
    -moz-box-shadow: none !important;
    -o-box-shadow: none !important;
    box-shadow: none !important;
    border: none !important;
}

.pkp_page_index .breadcrumbs-box {
    margin-bottom: 0 !important;
}

.home-intro-box {
    background: #FFF0E0 none repeat scroll 0 0;
    margin: 0 auto 30px;
    position: relative;
    top: -5px;
    border-bottom: 5px solid #DDDDDD;
}

.home-intro-box h2 {
    font-size: 18px;
    background: #D4AC71 none repeat scroll 0 0;
    color: #FFFFFF;
    padding: 10px;
    -webkit-border-radius: 2px;
    -moz-border-radius: 2px;
    -o-border-radius: 2px;
    -ms-border-radius: 2px;
    border-radius: 2px;
    font-weight: 800;
    margin: 20px auto;
}

.home-intro-box p {
    text-align: justify;
    color: #777777 !important;
}

.home-intro-text .read-more-button {
    background: #434343 none repeat scroll 0 0;
    color: #FFFFFF;
    display: inline-block;
    padding: 5px 20px;
    border-radius: 2px;
    margin: 10px auto 30px;
    text-decoration: none;
}

.home-intro-text .read-more-button:hover,
.home-intro-text .read-more-button:focus {
    background: #121212 none repeat scroll 0 0;
}

#homeTabs {
    padding-bottom: 10px;
    border-bottom: 1px solid #EEEEEE;
}
#homeTabs li a {
    border: none !important;
    background: #D7D7D7;
    padding: 15px 50px;
    margin-right: 10px;
    -webkit-transition: all 0.2s linear;
    -moz-transition: all 0.2s linear;
    -ms-transition: all 0.2s linear;
    -o-transition: all 0.2s linear;
    transition: all 0.2s linear;
    text-transform: uppercase;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 1px;
    font-family: 'Raleway', sans-serif !important;
    -webkit-border-radius: 2px;
    -moz-border-radius: 2px;
    -o-border-radius: 2px;
    -ms-border-radius: 2px;
    border-radius: 2px;
}

#homeTabs li a:hover {
    background: #D4AC71 none repeat scroll 0 0;
    color: #FFFFFF;
    -webkit-transition: all 0.2s linear;
    -moz-transition: all 0.2s linear;
    -ms-transition: all 0.2s linear;
    -o-transition: all 0.2s linear;
    transition: all 0.2s linear;
}

#homeTabs .active a {
    background: #D4AC71 none repeat scroll 0 0;
    color: #FFFFFF;
}

#homeTabsContent #pastissues ul {
    padding: 25px 0 0 5px;
    list-style: none;
    display: inline-block;
}

#homeTabsContent #pastissues ul li {
    display: inline-block;
    float: left;
}

#homeTabsContent #pastissues ul li a {
    background: #eeeeee none repeat scroll 0 0;
    color: #777777;
    text-transform: capitalize;
    padding: 5px 20px;
    font-weight: 600;
    display: inline-block;
    margin: 2px;
    -webkit-border-radius: 2px;
    -moz-border-radius: 2px;
    -o-border-radius: 2px;
    -ms-border-radius: 2px;
    border-radius: 2px;
    text-decoration: none;
    font-size: 13px;
}

#homeTabsContent #pastissues ul li a:hover,
#homeTabsContent #pastissues ul li a:focus {
    background: #777777 none repeat scroll 0 0;
    color: #eeeeee;
}

.hometabscontainer {
    display: inline-block;
    width: 100%;
    padding: 10px;
    -webkit-box-shadow: 0 1px 6px rgba(0,0,0,0.1) inset;
    -moz-box-shadow: 0 1px 6px rgba(0,0,0,0.1) inset;
    -o-box-shadow: 0 1px 6px rgba(0,0,0,0.1) inset;
    box-shadow: 0 1px 6px rgba(0,0,0,0.1) inset;
    -webkit-border-radius: 2px;
    -moz-border-radius: 2px;
    -o-border-radius: 2px;
    -ms-border-radius: 2px;
    border-radius: 2px;
}

.hometabscontainer .current_issue_title {
    text-align: center;
    margin: 10px auto 0;
    background: #f5f5f5;
    -webkit-border-radius: 2px;
    -moz-border-radius: 2px;
    -o-border-radius: 2px;
    -ms-border-radius: 2px;
    border-radius: 2px;
}

.hometabscontainer .published {
    text-align: center;
    margin: 0 auto;
    color: #D4AC71;
}

.hometabscontainer .page-header {
    border: none !important;
}

.hometabscontainer .page-header h2 {
    background: #E8E8E8 none repeat scroll 0 0;
    text-transform: uppercase;
    font-size: 26px;
    display: inline-block;
    width: 320px;
    height: 40px;
    line-height: 40px;
    padding: 0 0 0 20px;
    position: relative;
    -webkit-border-radius: 2px 0 0 2px;
    -moz-border-radius: 2px 0 0 2px;
    -o-border-radius: 2px 0 0 2px;
    -ms-border-radius: 2px 0 0 2px;
    border-radius: 2px 0 0 2px;
}

.hometabscontainer .page-header h2:after,
.hometabscontainer .page-header h2:before {
    left: 100%;
    top: 50%;
    border: solid transparent;
    content: " ";
    height: 0;
    width: 0;
    position: absolute;
    pointer-events: none;
}

.hometabscontainer .page-header h2::after {
    border-color: rgba(136, 183, 213, 0);
    border-left-color: #E8E8E8;
    border-width: 20px;
    top: 0;
}

.hometabscontainer .page-header h2::before {
    border-color: rgba(194, 225, 245, 0);
    border-left-color: #DEDEDE;
    border-width: 25px;
    top: -5px;
}

.hometabscontainer .page-header h2 small {
    font-weight: 600;
    margin-top: 13px;
}

.hometabscontainer .media-heading a {
    text-decoration: none !important;
}

.hometabscontainer .article-summary {
    border-bottom: 1px dashed #dddddd;
    padding-bottom: 20px;
}

.hometabscontainer .article-summary:last-child {
    border-bottom: none !important;
}

.hometabscontainer .authors {
    color: #D4AC71;
}

#carousel-header-generic {
    position: relative;
    right: -30px;
}

.carousel-control.left,
.carousel-control.right {
    background-color: transparent !important;
    -webkit-background-image: none !important;
    -moz-background-image: none !important;
    -o-background-image: none !important;
    background-image: none !important;
}

.home-intro-box .col-md-7 {
    float: right !important;
}

.journal-description {
    display: inline-block;
    width: 100% !important;
}

.journal-description img {
    padding: 10px;
}

.journal-description p {
    text-align: justify;
}

/************************************/
/************ Responsive ************/
/************************************/

@media only screen and (min-width: 240px) and (max-width: 767px) {

.pkp_structure_page {
    width: 100% !important;
}

.searchbar {
    display: none !important;
}

.social-box {
    display: none !important;
}

#carousel-header-generic {
    right: 0 !important;
}

.navbar-default .navbar-toggle .icon-bar, .header_view_pdf .navbar-toggle .icon-bar {
    background-color: #FFFFFF !important;
}

.navbar-toggle {
    border-radius: 2px !important;
    margin: 32px 20px 20px 20px;
}

.hometabscontainer .page-header h2 {
    width: 90% !important;
}

} /**************END***************/

@media only screen and (min-width: 768px) {

#nav-menu {
    display: inline-block !important;
    width: 100% !important;
    padding: 0 !important;
    position: relative;
    top: 6px;
}

} /**************END***************/

@media only screen and (min-width: 240px) and (max-width: 479px) {

#homeTabs li {
    width: 100% !important;
    margin: 0 auto 10px;
}

#homeTabs li a {
    width: 100% !important;
}

#navigationUser li a {
    padding: 10px 8px !important;
}

} /**************END***************/

@media only screen and (min-width: 480px) and (max-width: 767px) {

#homeTabs li a {
    padding: 15px 45px !important;
}

} /**************END***************/

} /**************END***************/

#full-size-image {  width: 100%; }

} /**************END***************/