.wp-block[data-align=center]>.wp-block-button{
margin-left:auto;
margin-right:auto;
text-align:center;
}
.wp-block[data-align=right]>.wp-block-button{
text-align:right;
}
.wp-block-button{
cursor:text;
position:relative;
}
.wp-block-button:focus{
box-shadow:0 0 0 1px #fff, 0 0 0 3px var(--wp-admin-theme-color);
outline:2px solid #0000;
outline-offset:-2px;
}
.wp-block-button[data-rich-text-placeholder]:after{
opacity:.8;
}
div[data-type="core/button"]{
display:table;
}
All system for education purposes only. For more tools: Telegram @jackleet