Adding a border to all solid background buttons

[tourbrandus]

Hello, 

I have a few buttons on my website that have a 1.5px solid black border and I want to add the same to the rest of the buttons that are the same color including the checkout and buy it now button. 

Is this something editable in the themes or will it need to be coded in?

Website: tourbrand.us

password: task1data

Example of what I want:

[tourbrandus]

Also this continue shopping button. 

[NomtechSolution · Accepted solution]

1. Add the border style: Once you've identified the button styles, add the following CSS rule to apply a 1.5px solid black border:

.button {
  border: 1.5px solid black;
}

[tourbrandus]

Hello this worked but now has a thin white outline between the black and green. 

How would I go about fixing this?

[Moeed]

Hey @tourbrandus 

Follow these Steps:

1) Go to Online Store
2) Edit Code
3) Find theme.liquid file
4) Add the following code in the bottom of the file above </body> tag.

<style>
button {
    border: 1px solid black !important;
}
</style>

If I managed to help you then, don't forget to Like it and Mark it as Solution!

Best Regards,
Moeed