tabs

li {
    display: inline-block;
    min-width: 150px;
    border: 1px solid red;
    border-top-left-radius: 14px 21px;
    border-top-right-radius: 14px 21px;
    margin: 0;
    padding-left: 15px;
    font-family: sans-serif;
    background-color: #F18282;
    color: #2B2B2B;
    box-shadow: 2px -1px 6px rgba(0,0,0,0.2);
    cursor: pointer;
    margin-left: -4px;
}

ul {
    display: block;
    width: 100%;
    /* border: 1px solid #ddd; */
    margin: 0;
    padding: 0;
}

<ul>
    <li class="active">Ciao</li>
    <li>Salve</li>
</ul>