.menu-price {
    display: inline-block;
    padding: 4px;
    position: absolute;
    right: 0px;
    top: 6px;
    background-color: #3ac5b7;
    color:#ffffff;
    font-weight: bold;
    margin: 0px;
}

.menu-price:after {
    content: ''; 
    position: absolute;
    left: -28px; 
    top: 0px;
    border: 14px solid transparent;
    border-right: 14px solid #3ac5b7;
}