For backlight effect and everything use this css
.ui-state-hover,
.ui-widget-content .ui-state-hover,
.ui-widget-header .ui-state-hover,
.ui-state-focus,
.ui-widget-content .ui-state-focus,
.ui-widget-header .ui-state-focus {
border: 1px solid #999999;
background: #dadada url(images/ui-bg_glass_75_dadada_1x400.png) 50% 50% repeat-x;
font-weight: normal;
color: #212121;
}
.ui-state-hover a,
.ui-state-hover a:hover,
.ui-state-hover a:link,
.ui-state-hover a:visited {
color: #212121;
text-decoration: none;
}
.ui-state-active,
.ui-widget-content .ui-state-active,
.ui-widget-header .ui-state-active {
border: 1px solid #aaaaaa;
background: #ffffff url(images/ui-bg_glass_65_ffffff_1x400.png) 50% 50% repeat-x;
font-weight: normal;
color: #212121;
}
.ui-state-active a,
.ui-state-active a:link,
.ui-state-active a:visited {
color: #212121;
text-decoration: none;
}
.ui-accordion .ui-accordion-header {
display: block;
cursor: pointer;
position: relative;
margin-top: 2px;
padding: .5em .5em .5em .7em;
min-height: 0;
border-top: 1px solid #cccccc;
border-bottom: 1px solid #cccccc;
}
.ui-accordion .ui-accordion-header :hover{background-color:#f7f7f7;}
.ui-accordion .ui-accordion-icons {
padding-left: 2.2em;
}
.ui-accordion .ui-accordion-noicons {
padding-left: .7em;
}
.ui-accordion .ui-accordion-icons .ui-accordion-icons {
padding-left: 2.2em;
}
.ui-accordion .ui-accordion-header .ui-accordion-header-icon {
position: absolute;
left: .5em;
top: 50%;
margin-top: -8px;
}
.ui-accordion .ui-accordion-content {
padding: 2em 1.2em;
border-top: 0;
overflow: auto;
}
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