If you want to stylishly customize the background of Pre Code, you can do this with this CSS code.
.Post-body pre {
padding:0 10px 0 0 !important;
background-size:50px 50px !important;
background-image:linear-gradient(transparent 50%, var(--code-bg)50%) !important;
line-height:25px;
border:2px solid var(--code-bg) !important;
background-color:transparent !important;
}
.Post-body pre code {
max-height:unset !important;
padding:0 0 0 10px !important
}
before css
after css
