JSFiddle - React, Tailwind, and code Playground

HTML

<input id="button1" type="submit" />

<input id="button2" type="submit" />

CSS

#button1 {
     border:1px #333 solid;   
    padding:10px;
    background-color:white;
    -webkit-border-radius:40px;
    -moz-border-radius:40px;
    border-radius:40px;
}

#button2 {
     border:1px #333 solid;   
    padding:10px;
    background-color:white;
    -webkit-border-radius:40px/24px;
    -moz-border-radius:40px/24px;
    border-radius:40px/24px;
}