解决EXTJS在firefox里字体显示偏小

.x-window-footer
{
position: relative;
top: 0;
right: 0;
}
.x-tab-strip SPAN.x-tab-strip-text
{
font-size: 12px;
}
.x-panel-header
{
font-size: 12px;
}
.x-tree-node
{
font-size: 12px;
}
.x-grid3-hd-row TD
{
font-size: 12px;
}
.x-grid3-row TD
{
font-size: 12px;
line-height: 16px;
}
.x-orange-class
{
background: #ffb11c;
}

.x-yellow-class
{
background: #ff0;
}
.x-tip .x-tip-bd
{
font-size: 12px;
}
.x-tip h3
{
font-size: 12px;
}
.x-tip .x-tip-bd-inner
{
font-size: 12px;
}
.x-panel-tl .x-panel-header
{
font: normal 12px tahoma,arial,verdana,sans-serif;
}
.x-form-field
{
font: 12px tahoma,arial,helvetica,sans-serif;
}
.x-small-editor .x-form-field
{
font: 12px tahoma,arial,helvetica,sans-serif;
}
.x-combo-list-item
{
font: 12px tahoma,arial,helvetica,sans-serif;
}
.x-menu-list-item
{
font: 12px tahoma,arial,sans-serif;
}
.x-window-tl .x-window-header
{
font: bold 12px tahoma,arial,verdana,sans-serif;
}
/* the textField missing bottom line */
.x-form-item
{
font: 12px tahoma,arial,helvetica,sans-serif;
}
.x-grid-group-hd DIV
{
font: bold 12px tahoma,arial,helvetica,sans-serif;
}

.x-btn-text-icon .x-btn-center .x-btn-text
{
background-position: 0pt 1px;
background-repeat: no-repeat;
padding: 0px 0pt 0px 18px;
}
.ext-gecko .x-btn button
{
padding-left: 0pt;
padding-right: 0pt;
}
.x-btn button
{
font-size: 12px;
}
.x-toolbar td, .x-toolbar span, .x-toolbar input, .x-toolbar div, .x-toolbar select, .x-toolbar label
{
font-size: 12px;
}
.x-fieldset legend
{
font-size: 12px;
}
.x-tip .x-tip-body
{
font-size: 12px;
}

.controlBtn img
{
cursor: pointer;
}

.x-grid3-summary-row
{
border-left: 1px solid #fff;
border-right: 1px solid #fff;
color: #333;
background: #f1f2f4;
}
.x-grid3-summary-row .x-grid3-cell-inner
{
font-weight: bold;
padding-bottom: 4px;
font-size: 12px;
}
.x-grid3-cell-first .x-grid3-cell-inner
{
padding-left: 16px;
}
.x-grid-hide-summary .x-grid3-summary-row
{
display: none;
}
.x-grid3-summary-msg
{
padding: 4px 16px;
font-weight: bold;
}
.negative
{
color: #dd0000;
}
.positive
{
color: green;
}
.x-grid3-body .x-grid3-td-cost
{
background-color: #f1f2f4;
}
.x-grid3-summary-row .x-grid3-td-cost
{
background-color: #e1e2e4;
}
.x-panel-fbar select, .x-panel-fbar label
{
font: 12px arial,tahoma,helvetica,sans-serif;
}

转载：http://hi.baidu.com/guodong828/blog/item/7a64e02472f51e3d8744f9ce.html