does not work properly

hi, as for me I get codes at the top of each wp page once the plugin enabled:

#nxt_pst_wrap{ max-width: 100%; position: fixed; bottom: 0; right: 0; z-index: 99999; } #nxt_pst_inner_wrap{ padding:5px; max-width: 100%; background-color: #fff; text-align: center; border: 5px solid rgba(220,220,220,0.38); border-radius: 10px; border-right: 15px; } #nxt_pst_content{ margin: 10px 10px 10px 10px; padding: 10px; margin-top: -10px; } #pre_nxt_p_close{ background: #d0d0d0; width: 60px; margin-bottom: -20px; opacity:

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