JSFiddle - React, Tailwind, and code Playground

HTML

<button>Кнопка</button>

CSS

button{
    border: 1px solid #fff; 
    padding: 10px 30px;
    font:18px Arial, sans-serif;
    position:relative;
    cursor:pointer;
    
    -webkit-box-shadow: 0px 0px 8px #ccc; 
    -moz-box-shadow: 0px 0px 8px #ccc; 
    box-shadow: 0px 0px 8px #ccc;   
    
    -webkit-border-radius: 21px; 
    -moz-border-radius: 21px; 
    border-radius: 21px;          
          
    -moz-background-clip: padding; 
    -webkit-background-clip: padding-box; 
    background-clip: padding-box; 
    
    background: #ffb0d4; /* Old browsers */
    background: -moz-linear-gradient(top, #ffb0d4 0%, #ffcce3 51%, #ffb0d4 100%); /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#ffb0d4), color-stop(51%,#ffcce3), color-stop(100%,#ffb0d4)); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top, #ffb0d4 0%,#ffcce3 51%,#ffb0d4 100%); /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top, #ffb0d4 0%,#ffcce3 51%,#ffb0d4 100%); /* Opera11.10+ */
    background: -ms-linear-gradient(top, #ffb0d4 0%,#ffcce3 51%,#ffb0d4 100%); /* IE10+ */
    background: linear-gradient(top, #ffb0d4 0%,#ffcce3 51%,#ffb0d4 100%); /* W3C */    
}
button:before{
    content:"";
    height:100%;
    width:100%;
    position:absolute;
    display:block;
    top:2px;
    left:2px;
    right:2px;
    bottom:2px;
    border:1px solid #fff;
    
    -webkit-border-radius: 21px; 
    -moz-border-radius: 21px; 
    border-radius: 21px;
}
button:hover{    
     text-shadow: 0px 0px 5px #fff; 
}