With css and html, make letters that curve like rainbows

<h1 style="color:red">Abera</h1>
<h1 style="color:orange">Woldemichael</h1>
<h1 style="color:yellow">Abera</h1>
<h1 style="color:green">Woldemichael</h1>
<h1 style="color:blue">Abera</h1>
<h1 style="color:indigo">Woldemichael</h1>
<h1 style="color:violet">Abera</h1>
<h1 style="color:purple">Woldemichael</h1>