.letter div:first-child {
    
    width: 85px;
    margin: 0 auto;
    text-align: center;
    border-bottom: 2px solid;
    font-size: 35px;
    background-color: #2E8AC2;
    border-radius: 0 0 50px 50px;
    border:none;
    color: #fff;
    -webkit-box-shadow: 0 3px 5px -1px rgb(0 0 0 / 75%);
    -moz-box-shadow: 0 3px 5px -1px rgba(0,0,0,.75);
    box-shadow: 0 3px 5px -1px rgb(0 0 0 / 75%)
}