Hi,
Comparing with our demo site of JA Mono, I see that some items under Portfolio section are not aligned center, you can try this custom CSS code:
@media (max-width: 480px) {
.acm-features .features-item > div {
display: block !important;
}
}
put into the file: root/templates/ja_mono/css/custom.css (create this file if it doesn't exist)
With JA Portfolio template, this is quite old template built with old T3v2 framework which supports several mobile layouts for popular devices only: iPhone, handheld... it doesn't fully support responsive layout as the new T3 framework (built for JA Mono template)
Regards