.tabs {
    width: 20em;
    font-family: Arial;
    font-size: 15px;
}

[role="tablist"] {
    margin: 0 0 -0.1em;
    overflow: visible;
}

[role="tab"] {
    position: relative;
    margin: 0;
    padding: 0.3em 0.5em 0.4em;
    border: 1px solid hsl(219, 1%, 72%);
    border-radius: 0.2em 0.2em 0 0;
    box-shadow: 0 0 0.2em hsl(219, 1%, 72%);
    overflow: visible;
    font-family: inherit;
    font-size: inherit;
    background: hsl(220, 20%, 94%);
}

    [role="tab"]:hover::before,
    [role="tab"]:focus::before,
    [role="tab"][aria-selected="true"]::before {
        position: absolute;
        bottom: 100%;
        right: -1px;
        left: -1px;
        border-radius: 0.2em 0.2em 0 0;
        border-top: 3px solid #00abb6;
        content: '';
    }

    [role="tab"][aria-selected="true"] {
        border-radius: 0;
        background: hsl(220, 43%, 99%);
        outline: 0;
    }

        [role="tab"][aria-selected="true"]:not(:focus):not(:hover)::before {
            border-top: 5px solid #00abb6;
            cursor: pointer;
        }

        [role="tab"][aria-selected="true"]::after {
            position: absolute;
            z-index: 3;
            bottom: -1px;
            right: 0;
            left: 0;
            height: 0.3em;
            background: hsl(220, 43%, 99%);
            box-shadow: none;
            content: '';
        }

    [role="tab"]:hover,
    [role="tab"]:focus,
    [role="tab"]:active {
        outline: 0;
        border-radius: 0;
        color: inherit;
    }

        [role="tab"]:hover::before,
        [role="tab"]:focus::before {
            border-color: hsl(20, 96%, 48%);
        }

[role="tabpanel"] {
    position: relative;
    z-index: 2;
    padding: 0.5em 0.5em 0.7em;
    border: 1px solid hsl(219, 1%, 72%);
    border-radius: 0 0.2em 0.2em 0.2em;
    box-shadow: 0 0 0.2em hsl(219, 1%, 72%);
    background: hsl(220, 43%, 99%);
}

    [role="tabpanel"]:focus {
        border-color: hsl(20, 96%, 48%);
        box-shadow: 0 0 0.2em hsl(20, 96%, 48%);
        outline: 0;
    }

        [role="tabpanel"]:focus::after {
            position: absolute;
            bottom: 0;
            right: -1px;
            left: -1px;
            border-bottom: 3px solid hsl(20, 96%, 48%);
            border-radius: 0 0 0.2em 0.2em;
            content: '';
        }

    [role="tabpanel"] p {
        margin: 0;
    }

    [role="tabpanel"] * + p {
        margin-top: 1em;
    }