validateDOMNesting(...): <h3> cannot appear as a descendant of <p> on frontend

[jeffstjean]

Running the frontend and opening the console shows the following warning:

Warning: validateDOMNesting(...): <h3> cannot appear as a descendant of <p>.
    at h3
    at p
    at http://localhost:3000/static/js/bundle.js:2051:66
    at Typography (http://localhost:3000/static/js/bundle.js:16348:87)
    at ul
    at http://localhost:3000/static/js/bundle.js:2051:66
    at List (http://localhost:3000/static/js/bundle.js:11041:82)
    at div
    at http://localhost:3000/static/js/bundle.js:2051:66
    at Box (http://localhost:3000/static/js/bundle.js:19301:72)
    at Altimeter (http://localhost:3000/static/js/bundle.js:425:5)
    at li
    at http://localhost:3000/static/js/bundle.js:2051:66
    at ListItem (http://localhost:3000/static/js/bundle.js:11360:83)
    at ul
    at http://localhost:3000/static/js/bundle.js:2051:66
    at List (http://localhost:3000/static/js/bundle.js:11041:82)
    at div
    at http://localhost:3000/static/js/bundle.js:2051:66
    at Grid (http://localhost:3000/static/js/bundle.js:8850:87)
    at div
    at http://localhost:3000/static/js/bundle.js:2051:66
    at Grid (http://localhost:3000/static/js/bundle.js:8850:87)
    at div
    at http://localhost:3000/static/js/bundle.js:2051:66
    at Container (http://localhost:3000/static/js/bundle.js:6916:82)
    at App (http://localhost:3000/static/js/bundle.js:63:84)