/* One readable interface for every age. */
.primary,.play{min-height:50px}
.unit-header h2{font-size:72px}
.unit-section h3{font-size:21px}
.mouth-steps{font-size:14px;line-height:1.9}
.unit-nav button{min-height:44px}
.quiz-options button{min-height:60px}
footer .contact-link{min-height:44px;display:inline-flex;align-items:center;overflow-wrap:anywhere}
@media(max-width:650px){.unit-header h2{font-size:55px}.unit-section h3{font-size:16px}.mouth-steps{font-size:12px}.preferences .language{min-height:44px}}