.stl_tab {
    display: block;
    margin: 0 auto;
    max-width: 75.5rem;
}

.stl_tab__list {
    text-align: center;
    position: relative;
}

.stl_tab__list::after {
    content: '';
    display: block;
    position: absolute;
    width: 100%;
    bottom: 0;
    height: 0.125rem;
    background-color: #dedede;
}

.stl_tab__btn {
    position: relative;
    margin-right: 2rem;
    padding: 1rem;
    font-size: 1.125rem;
    font-weight: 600;
    text-transform: uppercase;
    color: #666;
    border: none;
    background-color: transparent;
    cursor: pointer;
}

.stl_tab__btn:last-child {
    margin-right: 0;
}

.stl_tab__btn::after {
    content: '';
    display: block;
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 2.5rem;
    height: 0.125rem;
    -webkit-transform: translateX(-50%);
        -ms-transform: translateX(-50%);
            transform: translateX(-50%);
    background-color: #999;
    z-index: 1;
    -webkit-transition: width 0.3s ease;
    -o-transition: width 0.3s ease;
    transition: width 0.3s ease;
}

.stl_tab__btn.is-active {
    color: #f05b6f;
}

.stl_tab__btn.is-active::after {
    width: 100%;
    left: 0;
    height: 0.25rem;
    -webkit-transform: none;
        -ms-transform: none;
            transform: none;
    background-color: #f05b6f;
}

.stl_tab__btn:hover, .stl_tab__btn:focus, .stl_tab__btn:active {
    color: #f05b6f;
    outline: none;
}

.stl_tab__btn:hover::after, .stl_tab__btn:focus::after, .stl_tab__btn:active::after {
    width: 100%;
}

.stl_navtab {
    display: inline-block;
}

.stl_navtab__link {
    text-decoration: none;
    font-size: 1.125rem;
    color: inherit;
}

@media screen and (max-width: 48em) {
    .stl_tab__list {
        width: 100%;
        overflow-y: auto;
        white-space: nowrap;
    }
    .stl_tab__btn {
        margin-right: 1rem;
        padding: 0.5rem;
        font-size: 1rem;
    }
}