JSFiddle - React, Tailwind, and code Playground

HTML

<div class="header">
    <a href="#" class="logo">Название сайта</a>
    <span class="nav">
        <a href="#">Кнопка раз</a>
        <a href="#">Кнопка два</a>
        <a href="#">Кнопка три</a>
    </span>
</div>

CSS

.header {
    /* IE10 */ 
    background-image: -ms-linear-gradient(top, #F7FF87 0%, #302609 100%);
    /* Mozilla Firefox */ 
    background-image: -moz-linear-gradient(top, #F7FF87 0%, #302609 100%);
    /* Opera */ 
    background-image: -o-linear-gradient(top, #F7FF87 0%, #302609 100%);
    /* Webkit (Safari/Chrome 10) */ 
    background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0, #F7FF87), color-stop(1, #302609));
    /* Webkit (Chrome 11+) */ 
    background-image: -webkit-linear-gradient(top, #F7FF87 0%, #302609 100%);
    /* Proposed W3C Markup */ 
    background-image: linear-gradient(top, #F7FF87 0%, #302609 100%);
    filter:           progid:DXImageTransform.Microsoft.gradient(enabled='true', startColorstr=#F7FF87, endColorstr=#302609);
    border-radius: 1em;
    padding: 0 2em;
    text-align: right;
    min-width: 40em;
}
.nav {
    display: inline-block;
    line-height: 100px;   
}
.logo {
    float: left;
    font: bold 2em/1 sans-serif;
    color: #fff;
    text-shadow: 2px 2px 2px #000;
    text-decoration: none;
    line-height: 100px;
}
.nav a {
    display: inline-block;
    padding: .5em 1em;
    border: 1px solid #888;
    border-radius: .5em;
    background: #ddd;
    line-height: 1;
    box-shadow: inset 0 0 5px #aaa;
}
.nav a:hover {
    background: #fff;
    box-shadow: inset 0 0 5px #ccc;
}