Ok Martin, so this border is from coming from the default file ‘theme\styles\web\sass\core\widgets\dataview.scss > line 21’
You should not alter this file because it gets overwritten when upgrading Atlas. Instead copy the file to theme\styles\web\sass\app\dataview.scss’ and delete all the style in it except this
.mx-dataview {
.mx-dataview-controls {
border-top: none; //This is what overrides the default styling
}
}
Open ‘custom.scss’ in the same folder and add the import statement ‘@import "dataview";’
Download Koala or Calypso and use it to complile your new CSS file.