.title {
    position: relative;
    color: var(--black);
    font-size: var(--title-size);
    margin-bottom: 1rem;
    display: inline-flex;
}

h1 {
    --title-size: 2.5rem;
}

h2 {
    --title-size: 2rem;
}

h3 {
    --title-size: 1.5rem;
}

h4 {
    --title-size: 1.25rem;
}

h5 {
    --title-size: 1rem;
}

h6 {
    --title-size: 1rem;
}

.title::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--blue);
}