Простая кнопка на CSS


.more-link {
    background: none repeat scroll 0 0 #232527;
    border-radius: 3px 3px 3px 3px;
    color: #FFFFFF;
    display: inline-block;
    font-size: 14px;
    font-weight: bold;
    margin-top: 10px;
    padding: 8px 18px;
    text-decoration: none;
    transition: background 0.1s linear 0s;
}
.more-link:hover {
    background: none repeat scroll 0 0 #F26C4F;
    color: #FFFFFF;
}
<a class="more-link" href="#">Continue Reading</a>

Простая кнопка на CSS