Clear cahce under var folder and add bellow css to https://superdesechablesdelnorte.com/themes/classic/assets/css/theme.css
#left-column .col-xl-3 {
float: left;
width: 100%;
}
If you are not adding #left column before it can change every where
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Clear cahce under var folder and add bellow css to https://superdesechablesdelnorte.com/themes/classic/assets/css/theme.css
#left-column .col-xl-3 {
left float;
width: 100%;
}