I need to adapt the with of the input to the number of characters that the input have. 
A very large input broke the styles if you have many "filters" actives. The size of 15 is to show the placeholder, if you write in the input the size is changed by js.
Maybe I can remove the size attribute here (or add a larger one) and change it by js when the document is ready, so if you don't have js it remains like that.