Why doesn't border-image work in mailing list template?

Question

css

Everyone, good day. I'm dealing with the mailing list template and I can't get the border-image to be displayed in Yandex.Mail and GMail. It seems that both systems should understand this property, what am I doing wrong?

<table cellpadding="0" cellspacing="0" border="0" align="center" width="610" style="background: #fff; border-style: solid; border-width: 5px; border-image: url(brdr2.png) 4 fill round; -moz-border-image: url(brdr2.png) 4 round; -webkit-border-image: url(brdr2.png) 4 round; -o-border-image: url(brdr2.png) 4 round;" bgcolor="#ffffff" class="content">
        <tr>
          <td style="padding:60px;" align="left"></td>
</tr>
</table>

update:
So, it became 50% clear. Yandex.Mail without border-collapse: initial; does not want to display the border. For Yandex, the settlement style is as follows:

element.style {
background: #fff;
border-collapse: initial;
border-style: solid;
border-width: 5px;
border-image: url(https://cache.mail.yandex.net/mail/3aacc3fbbf2a2e9b0c20d7326dce0594/spongecompany.ru/test/gosinvestmail/brdr2.png) 4 round round;
}

Gmail unfortunately continues to ignore border-image.

Answer 1

So, 50% became clear. Yandex.Mail without border-collapse: initial; does not want to display the border. For Yandex, the settlement style is as follows:

element.style {
background: #fff;
border-collapse: initial;
border-style: solid;
border-width: 5px;
border-image: url(https://cache.mail.yandex.net/mail/3aacc3fbbf2a2e9b0c20d7326dce0594/spongecompany.ru/test/gosinvestmail/brdr2.png) 4 round round;
}

Gmail unfortunately continues to ignore border-image.

Answer 2

Try removing border="0"

Answer 3

Well, not the systems, but the browser should understand! Secondly, maybe the path is not specified correctly, or the mail systems cut off some styles! Try to look at the source code of the letter, maybe you will find something interesting!