blog-duhaz-v3/static/django_tinymce/admin_tinymce.css

/*
Workaround for the following rule defined in
django/contrib/admin/static/admin/css/responsive.css (which is
unsuitable for textareas used by TinyMCE internally):

@media (max-width: 1024px) {
    textarea {
        max-width: 100%;
        max-height: 120px;
    }
}
*/
.tox .tox-textarea-wrap .tox-textarea {
    max-height: none;
}