md-composer-color-plus-ultra/mobile/mobile.scss

#reply-control .d-editor-button-bar .bullet, #reply-control .d-editor-button-bar .list, #reply-control .d-editor-button-bar .align_justify_button{
    display: none;
}

.d-editor-spacer {
    margin: 0 2px;
}

[data-wrap="columns"] {
}

[data-wrap="floatl"] {
}

[data-wrap="floatr"] {
}
[data-wrap="floatc"] {
}