Quote from omer hi,

i want just login panel... i don need header section... 

i want to remove header section from base Showcase theme but how?...

.ow_header_pic, .ow_header { display: none}

no, by this way lost main menu... 

Well that's how you remove the header section.

Omer, can you provide screen shot of the exact block you would like to remove?

no need, just header pic...

Omer, in this case Krunch's solution is 100% correct and it should not have removed your main menu.

.ow_header_pic {    background-image: none;    height: 15px;}