Customising Button Font Type Help

[c2-Charlie]

Hey all,

I want to change the button font to "Avenir Next" to match the title above.

Here is the existing code, please let me know what to add in to change the font.

html {background-color: black;}p {letter-spacing: 0px; font-size: 13.5px; color: #d8d8d8;}a {letter-spacing: 0px; font-size: 13.5px; color: #d8d8d8;} {letter-spacing: 0px; font-size: 13.5px; color: #d8d8d8;}::selection {color: black; background-color: white;}.badge {font-weight: bold; border: 1px #e3f7fd;}.price--on-sale {font-size: 15px;}.price-item--regular {font-size: 15px;}h1,h2,h3,h4,h5 {color: white;}h1,h2 {text-transform: uppercase;}label,input {color: #c2c2c2; font-size: 13.5px;}button,.button {background-color: white; color: black; font-size: 13.5px;}input:-webkit-autofill,input:-webkit-autofill:hover,input:-webkit-autofill:focus,input:-webkit-autofill:active {-webkit-box-shadow: 0 0 0 30px white inset !important;}.rale-modal-title,.rale-customized .rale-message,.rale-customized .rale-message .rale-link {color: black;}@media only screen and (max-width: 750px) {h1, .h1 {font-size: calc(var(--font-heading-scale) * 2.4rem); }@media only screen and (max-width: 750px) {h2, .h2 {font-size: calc(var(--font-heading-scale) * 1.8rem); }

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