.with-line::before {
    content: "";
    display: inline-block;
    width: 40%;
    border-bottom: 1px solid gray;
    margin: 5px;
}
.with-line {
    text-align: center;
    width: 100%;
}
.with-line::after {
    content: "";
    display: inline-block;
    width: 40%;
    border-bottom: 1px solid gray;
    margin: 5px;
}