Codigo Style para mudar cor e tamanho da fonte no site

<style> h1 { font-family: arial; font-size: 100pt; color:blue; text-shadow: 2px 2px 2px red; } </style> <style>h2 { font-family: arial; font-size: 50pt; color:blue; text-shadow: 2px 2px 2px red; } </style> <h1>Ola mundo</h1><h2>Ola mundo</h2>