Please go to My Site → Customize → CSS (or Additional CSS), then add all of the following code to the bottom of that window.
/* This CSS puts the sharing buttons at the top of single post pages.
* 11021730-hc (jw)
*/
.single .entry-content {
display: flex;
flex-direction: column;
}
.single .entry-content p {
order: 2;
}
.single #jp-post-flair {
order: 1;
margin-bottom: 50px;
}
Tip: keep the /*
comment */
in the code to later know what this code does.