How to remove corner border on shopping cart button without affecting others?

[12ah1ed]

Hello theres a little problem i cant get rid of. If i hover over my "In the Shopping Cart Button" then there are those little black triangle corners/borders. 

Without hovering.

. 

I found the problem in the Theme Settings its the option where u can change the border radius. if i change it to 20px the problem is solved but then all other Buttons in my shopify website are 20px rounder. Is there any way to fix it without affecting every other button? 

This is the code in my base.css for my shopping cart button. 

.product-form__submit {
    background: #0d5a10 !important;
    color: #ffffff !important;
    border-radius: 50px !important;
    box-shadow: none !important;
    border: 1px solid black !important;
}

.product-form__submit:hover {
    background: #ffffff !important; /* Hintergrund wird weiß beim Hover */
    color: #000000 !important; /* Textfarbe ändern, falls benötigt */
    border: 1px solid black !important;
}

pls help me xD

[niraj_patel]

Hello @12ah1ed 
can you  share store URL? 

[BSS-Commerce]

Hi @12ah1ed ,
Can you kindly share your store link (with the password, if any) with us? We will check it and suggest you a solution if possible.