hello, yesterday I asked question in the community about how to adjust position “add to cart” button on website
i got the answer like this :
add this code at the end of your CSS file (Themes → Edit code → Assets → theme.css )
.grid__item {
position: relative;
min-height: 450px;
}
.grid__item form {
position: absolute;
bottom: 0px;
margin-bottom: 15px;
}
@media only screen and (max-width: 768px) {
.grid__item {
min-height: 350px;
}
}
on my computer website, i see the button is tidy
but on my mobile phone ,my store change like this
There is a huge gap in the middle of the button
my shopify store theme is dubet
my shopify store url is :
https://8ebr5g11vrsdzpz9-56140005553.shopifypreview.com/
please tell me what should i do to adjust the add to cart button on mobile phone
thank you very much and have a nice day : )

