Please add this CSS code you see below to your website. Here you can find an article on how to add CSS code and make it future update compatible: How to add CSS code that is future update compatible
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* * * * * * *,
* * * * * * *:before,
* * * * * * *:after,
*:hover,
* *:hover,
* * *:hover,
* * * *:hover,
* * * * *:hover,
* * * * *:hover,
* * * * * *:hover,
* * * * * * *:hover,
*:active,
* *:active,
* * *:active,
* * * *:active,
* * * * *:active,
* * * * *:active,
* * * * * *:active,
* * * * * * *:active,
*:focus,
* *:focus,
* * *:focus,
* * * *:focus,
* * * * *:focus,
* * * * *:focus,
* * * * * *:focus,
* * * * * * *:focus {
border-radius:0!important;
}