Extjs4 覆盖默认样式

/* 修改窗口标题字体*/
.x-window-header-text-default {
    color: #04468C;
    font-family: tahoma,arial,verdana,sans-serif;
    font-size: 11px;
    font-weight: bold;
    line-height: 17px;
} 
/*修改标题栏样式*/ 
 .x-window-header-default-top {
    background-color: #CED9E7;
    border-radius: 5px 5px 0 0;
    border-style: solid;
    border-width: 1px 1px 0;
    padding: 4px 5px 0;

} 

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/* 修改任务栏字体 */
 .x-toolbar .x-toolbar-text {
    color: #4C4C4C;
    font-family: tahoma,arial,verdana,sans-serif;
    font-size: 11px;
    font-weight: normal;
    line-height: 16px;
    margin-left: 4px;
    margin-right: 6px;
    white-space: nowrap;
} 

/* 修改任务栏中图标的文字 */
 .x-btn-default-toolbar-small .x-btn-inner {
    background-repeat: no-repeat;
    color: #333333;
    font-family: tahoma,arial,verdana,sans-serif;
    font-size: 15px;
    font-weight: normal;
    padding: 0 4px;
} 

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/* 修改表头文本 */
.x-column-header {
    background-color: #C5C5C5;
    background-image: -moz-linear-gradient(center top , #F9F9F9, #E3E4E6);
    border-color: -moz-use-text-color #C5C5C5 -moz-use-text-color -moz-use-text-color;
    border-left: 0 none;
    border-right: 1px solid #C5C5C5;
    border-style: none solid none none;
    border-width: 0 1px 0 0;
    font: 11px tahoma,arial,verdana,sans-serif;
    overflow: hidden;
    padding: 0;
    position: absolute;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.3);
} 
/* 修改表格单元格 */
.x-grid-row .x-grid-cell {
    background-color: white;
    border-color: #FAFAFA #EDEDED #EDEDED;
    border-right: 0 solid #EDEDED;
    border-style: solid;
    border-width: 0;
    font: 11px/15px tahoma,arial,verdana,sans-serif;
} 
/* 修改表头行高 */

 .x-column-header-inner {
    line-height: 30px;
    padding: 0;
    position: relative;
    white-space: nowrap;
} 

/* 调整表格行高 */
.x-grid-with-row-lines .x-grid-cell-inner {
    line-height: 13px;
    padding-bottom: 4px;
} 

/* 修改表格、树背景 */
.x-panel .x-grid-body {
    background: none repeat scroll 0 0 transparent;
    border-color: #C5C5C5 #99BCE8 #99BCE8;
    border-right: 1px solid #99BCE8;
    border-style: solid;
    border-width: 1px;
} 

/*鼠标移到树、表格单条记录后的显示效果*/
.x-grid-row-over .x-grid-cell{
     background-image:url(../image/treeIcon/nav_hover_bg.jpg);
 }

/*记录选中后*/
 .x-grid-row-selected .x-grid-cell, .x-grid-row-selected .x-grid-rowwrap-div
 {
     background-image:url(../image/treeIcon/nav_hover_bg.jpg) !important;
     font-weight: bold;
 }

/*树、表格行间距*/
.x-tree-elbow, .x-tree-elbow-end, .x-tree-elbow-plus, .x-tree-elbow-end-plus, .x-tree-elbow-empty, .x-tree-elbow-line {
    height: 25px;
    width: 16px;
}

/*表格标题文本*/

.x-panel-header-text-default-framed {

    font-family: "微软雅黑";
    font-size: 12px;
    font-weight: bold;
    line-height: 18px;
}