.form_ctrl{ border: 1px solid #D5D5D5; position: relative; box-sizing: border-box; background: #FFFFFF; } .Ctrl{ border: 1px solid #D5D5D5; position: absolute; box-sizing: border-box; } .form_ctrl.form_ctrl_tab{ margin-top: 30px; z-index: 0; } .form_ctrl.form_ctrl_titled{ margin-top: 30px; } .form_ctrl.form_ctrl_tab.form_ctrl_titled{ margin-top: 60px; }