JSFiddle - React, Tailwind, and code Playground

CSS

.lengkung2{
    -webkit-border-bottom-left-radius: 40px;
    -webkit-border-top-right-radius: 40px;     
    border: 3px solid #920707;
width: 300px;
margin:auto;
height: 40px;
text-align:center;
padding-top:20px;
margin-top: 20px;
}