.hide-header-btn{ display:inline-block; float:right; margin-top:8px; }
.show-header-btn{ display:inline-block; float:right; display:none; }
.show-header-btn>.btn{ padding:2px; line-height:10px !important; font-size:10px; height:22px;}
.show-header-btn>.btn>i{ margin-top:0;}