Hi There,
There are some psudo before the button links with some styles, we have to remove them as well.
Please update your custom CSS to this:
.woocommerce-MyAccount-navigation-link a:before {
display: none;
}
.woocommerce-MyAccount-navigation-link a {
border:solid;
border-width: 1px;
border-color: #5f4f4c;
-moz-border-radius: 0px;
border-radius: 0px;
-webkit-border-radius: 0px;
}
If you would like to learn CSS, I am sharing few resources that you take a look to get started with CSS and an interesting tool that you can use to speed up the development process.
I recommend you to watch following video that will help you to get started with CSS.
https://www.youtube.com/watch?v=MFR4WXiLzpc
Sometimes it can get a bit difficult to find out the right selector to be able to write the required CSS codes. A handy tool that can help you in this is Google Chrome dev tools. I am sharing the resource that you can refer to get started with dev tools.
https://developers.google.com/web/tools/chrome-devtools/css/
https://developers.google.com/web/tools/chrome-devtools/
https://www.youtube.com/watch?v=tP_kXBJWPhQ&t=200s
Thanks.