SharePoint 2010: Hide error icon in sign in or login page

Sharepoint 2010 FBA: Hide error icon in sign in page 

<style>

//this will hide the icon

.s4-simple-iconcont

{

    display:none;

}

//it will change height, border and width 

BODY #s4-simple-card

{

margin: 25px auto 0px !important;

width: 700px !important;

height:300px !important;

}

BODY #s4-simple-content

{

margin-left:0px !important;

}

BODY #s4-simple-card H1

{

display:none !important;

}

</style>