SPFX Webpart width shrinked after published in Modern Page - SharePoint Online

Question

Developing SPFX app, where everything looks good(I mean the width) in edit mode, soon after publish the webpart width is getting reduced somehow.

Using Fabric UI CSS

.propertyDigitalManagementWebpart {
  .container {
    margin: 0px auto;
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.2), 0 25px 50px 0 rgba(0, 0, 0, 0.1);
  }

  .grid {
    @include ms-Grid;
  }

  .row {
    @include ms-Grid-row;
    //@include ms-fontColor-white;
    //background-color: $ms-color-themeDark;
    padding: 20px;
  }

  .column10 {
    @include ms-Grid-col;
    @include ms-lg10;
    @include ms-xl8;
  }

  .column2 {
    @include ms-Grid-col;
    @include ms-lg2;
  }

  .column1 {
    @include ms-Grid-col;
    @include ms-lg1;
  }

Main webpart has below code

<div className={styles.propertyDigitalManagementWebpart}>
        <div className={styles.grid}>
          <ContainerComponent />
        </div>
      </div>

Sub Component - Container

 <div className={styles.row}>
        <div className={selectedPrptyRecord ? styles.column9 : styles.column12} >
          <TextField id="standard-basic" label="Search" onChange={srcTextFieldChange} />
        </div>
      </div>
      <div className={styles.row}>
        <div className={selectedPrptyRecord ? styles.column9 : styles.column12} >
          <div style={{ minHeight: "768px" }} >
            <DataGrid rows={propertyRecords} columns={columns} pageSize={10}
              onSelectionChange={(newSelection) => {
                console.log("selection event");
                console.dir(newSelection);
                SelectedRowEvent(newSelection.rowIds);
              }}
              hideFooterSelectedRowCount={true}
              rowsPerPageOptions={[5, 10, 20]}
            />
          </div>
        </div>
        {selectedPrptyRecord != null && Object.keys(selectedPrptyRecord).length > 0 &&
          <SidePanelComponent selectedRecord={selectedPrptyRecord} closeEvent={handleClose} />
        }
      </div>

I don't know what's causing the issue to shrink the webpart after publish

Answer 1

the workaround or css tweak is

:global(#workbenchPageContent) {  
  max-width: initial;  
} 

:global(.CanvasZone > div) {  
  width: 100%;  
}