I have found this code to be useful:
.sqs-block.image-block {
padding: 0!important;
}
.sqs-image-block-stacked .image-wrapper {
margin:0 0 0 0;
}
.sqs-block.gallery-block {
}
.sqs-gallery-block-stacked .image-wrapper {
margin:0 0 0 0;
}
.sqs-block.video-block {
}
.sqs-block.code-block {
padding: 0px!important;
margin-top: 0px;
margin-bottom: 0px;
}
Add whatever piece you need