.html-editor-content p,
.html-editor-content h1,
.html-editor-content h2,
.html-editor-content h3,
.html-editor-content h4,
.html-editor-content h5,
.html-editor-content h6{
    margin: 0 !important;
}

.html-editor-content h1, .html-editor-content h1 span {
    font-size: 3rem !important;
}
.html-editor-content h2, .html-editor-content h2 span {
    font-size: 2.5rem !important;
}
.html-editor-content h3, .html-editor-content h3 span {
    font-size: 2.125rem !important;
}
.html-editor-content h4, .html-editor-content h4 span {
    font-size: 1.5rem !important;
}
.html-editor-content h5, .html-editor-content h5 span {
    font-size: 1.25rem !important;
}
.html-editor-content h6, .html-editor-content h6 span {
    font-size: 1rem !important;
}