各位大佬，请问为什么QComboBox点击选项时，选项会出现错位的现象呢？具体代码如下：
m_labelLanguage = new QLabel(LABEL_SOFTWARE_LANGUAGE_INFO, this);
m_labelLanguage->setAlignment(Qt::AlignCenter);
m_labelLanguage->setStyleSheet("QLabel{border-radius:0px;background-repeat:no-repeat;border:none;color:black;font:14px ""SimHei"";}");
m_labelLanguage->resize(this->width()*30/100, this->height()*20/100);
m_labelLanguage->move(this->width()*5/100, this->height()*23/100);
m_comboLanguage = new QComboBox(this);
m_comboLanguage->setStyleSheet("QComboBox{font-family:'SimHei';font-size:9; border:1px solid lightgray;}"
"QComboBox QAbstractItemView::item {min-height: 16px;}"
"QComboBox::drop-down{border-left-width: 1px;border-left-color: lightgray;border-left-style: solid; border-top-right-radius: 3px;border-bottom-right-radius: 3px;subcontrol-origin: padding;subcontrol-position: top right; width:20px;}"
"QComboBox::down-arrow{image:url(:/res/pwd/arrowDown01.png)}"
"QComboBox::down-arrow:hover{image:url(:/res/pwd/arrowDown01.png)}"
"QComboBox::down-arrow:pressed{image:url(:/res/pwd/arrowDown01.png)}");
m_comboLanguage->addItem(COMBOBOX_SIMCHINESE_INFO);
m_comboLanguage->addItem(COMBOBOX_TRACHINESE_INFO);
m_comboLanguage->addItem(COMBOBOX_ENGLISH_INFO);
QStyledItemDelegate *delegate1 = new QStyledItemDelegate(this);
m_comboLanguage->setItemDelegate(delegate1);
m_comboLanguage->resize(this->width()*40/100, this->height()*11/100);
m_comboLanguage->move(this->width()*4/100 + m_labelLanguage->width(), this->height()*28/100);
m_labelEncryptLevel = new QLabel(LABEL_ENCRYPT_LEVEL_INFO, this);
m_labelEncryptLevel->setAlignment(Qt::AlignCenter);
m_labelEncryptLevel->setStyleSheet("QLabel{border-radius:0px;background-repeat:no-repeat;border:none;color:black;font:14px ""SimHei"";}");
m_labelEncryptLevel->resize(this->width()*30/100, this->height()*20/100);
m_labelEncryptLevel->move(this->width()*5/100, this->height()*40/100);
m_comboEncryptPsi = new QComboBox(this);
m_comboEncryptPsi->setStyleSheet("QComboBox{font-family:'SimHei';font-size:9; border:1px solid lightgray;}"
"QComboBox QAbstractItemView::item {min-height: 16px;}"
"QComboBox::drop-down{border-left-width: 1px;border-left-color: lightgray;border-left-style: solid; border-top-right-radius: 3px;border-bottom-right-radius: 3px;subcontrol-origin: padding;subcontrol-position: top right; width:20px;}"
"QComboBox::down-arrow{image:url(:/res/pwd/arrowDown01.png)}"
"QComboBox::down-arrow:hover{image:url(:/res/pwd/arrowDown01.png)}"
"QComboBox::down-arrow:pressed{image:url(:/res/pwd/arrowDown01.png)}");
m_comboEncryptPsi->addItem(COMBOBOX_DATAHIDE_INFO);
m_comboEncryptPsi->addItem(COMBOBOX_DATAENCRYPT_INFO);
QStyledItemDelegate *delegate2 = new QStyledItemDelegate(this);
m_comboEncryptPsi->setItemDelegate(delegate2);
m_comboEncryptPsi->resize(this->width()*40/100, this->height()*11/100);
m_comboEncryptPsi->move(this->width()*4/100 + m_labelEncryptLevel->width(), this->height()*45/100);
m_labelEncrypAlgorithm = new QLabel(LABEL_ENCRYPT_ALGORITHM_INFO, this);
m_labelEncrypAlgorithm->setAlignment(Qt::AlignCenter);
m_labelEncrypAlgorithm->setStyleSheet("QLabel{border-radius:0px;background-repeat:no-repeat;border:none;color:black;font:14px ""SimHei"";}");
m_labelEncrypAlgorithm->resize(this->width()*30/100, this->height()*20/100);
m_labelEncrypAlgorithm->move(this->width()*5/100, this->height()*57/100);
m_comboAlgorithm = new QComboBox(this);
m_comboAlgorithm->setStyleSheet("QComboBox{font-family:'SimHei';font-size:9; border:1px solid lightgray;}"
"QComboBox QAbstractItemView::item {min-height: 16px;}"
"QComboBox::drop-down{border-left-width: 1px;border-left-color: lightgray;border-left-style: solid; border-top-right-radius: 3px;border-bottom-right-radius: 3px;subcontrol-origin: padding;subcontrol-position: top right; width:20px;}"
"QComboBox::down-arrow{image:url(:/res/pwd/arrowDown01.png)}"
"QComboBox::down-arrow:hover{image:url(:/res/pwd/arrowDown01.png)}"
"QComboBox::down-arrow:pressed{image:url(:/res/pwd/arrowDown01.png)}");
m_comboAlgorithm->addItem(ITEM_ALGO_AES256_INFO);
m_comboAlgorithm->addItem(ITEM_ALGO_SM4_INFO);
QStyledItemDelegate *delegate3 = new QStyledItemDelegate(this);
m_comboAlgorithm->setItemDelegate(delegate3);
m_comboAlgorithm->resize(this->width()*40/100, this->height()*11/100);
m_comboAlgorithm->move(this->width()*4/100 + m_labelEncrypAlgorithm->width(), this->height()*62/100);
