.wp-block-rss li a>div{
display:inline;
}
.wp-block-rss__placeholder-form>*{
margin-bottom:8px;
}
@media (min-width:782px){
.wp-block-rss__placeholder-form>*{
margin-bottom:0;
}
}
.wp-block-rss__placeholder-form .wp-block-rss__placeholder-input{
flex:1;
min-width:80%;
}
All system for education purposes only. For more tools: Telegram @jackleet