How to make a fix width for a select list

APEX 4
good day everyone I have an apex_item selectlist. My question is How do I make a fix width on it?

http://download.oracle.com/docs/cd/E17556_01/doc/apirefs.40/e15519/apex_item.htm#CHDHJJAB
APEX_ITEM.SELECT_LIST(
    p_idx           IN   NUMBER,
    p_value         IN   VARCHAR2 DEFAULT NULL,
    p_list_values   IN   VARCHAR2 DEFAULT NULL,
    p_attributes    IN   VARCHAR2 DEFAULT NULL,
    p_show_null     IN   VARCHAR2 DEFAULT 'NO',
    p_null_value    IN   VARCHAR2 DEFAULT '%NULL%',
    p_null_text     IN   VARCHAR2 DEFAULT '%',
    p_item_id       IN   VARCHAR2 DEFAULT NULL,
    p_item_label    IN   VARCHAR2 DEFAULT NULL,
    p_show_extra    IN   VARCHAR2 DEFAULT 'YES')
    RETURN VARCHAR2;Specify
p_attributes => 'style="width: 200px;"'for a width of 200px.
Ta,
Trent

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