p:has(a[href="calendar"]) {
    position: absolute;
    top: .75rem;
    right: 1rem;
    text-decoration: none;
    z-index: 1;
    text-align: center;
    margin: 0;
}
a[href="calendar"] {
    position: relative;
    display: inline-block;
    /*margin: 15px 25px;*/
    outline: none;
    color: #fff;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 400;
    text-shadow: 0 0 1px rgba(255,255,255,0.3);
    font-size: 1.35em;
}
a[href="calendar"]:hover,
a[href="calendar"]:focus {
    outline: none;
}
/* Effect 2: 3D rolling links, idea from http://hakim.se/thoughts/rolling-links */
a[href="calendar"] {
    line-height: 44px;
    perspective: 1000px;
}

a[href="calendar"] span {
    position: relative;
    display: inline-block;
    padding: 0 14px;
    background: var(--complementary);/*INITIAL BACKGROUND COLOR*/
    transition: transform 0.3s;
    transform-origin: 50% 0;
    transform-style: preserve-3d;
}

a[href="calendar"] span::before {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--mainDark);/*BRIEF FLASH OF COLOUR AS THE RECTANGLE ROTATES*/
    content: attr(data-hover);
    transition: background 0.3s;
    transform: rotateX(-90deg);
    transform-origin: 50% 0;
}

a[href="calendar"]:hover span,
a[href="calendar"]:focus span {
    transform: rotateX(90deg) translateY(-22px);
}

a[href="calendar"]:hover span::before,
a[href="calendar"]:focus span::before {
    background: var(--mainLight);/*END COLOUR AFTER HOVER*/
}
/*HIDE THE BOOKING BUTTON IN AN ORDER CONFIRMATION*/
.order-backdrop a[href*="calendar"] span {
    display: none;
}
@media only screen and (max-width: 590px) {
    p:has(a[href="calendar"]) {
        top: .3rem;
        left: 1rem;
        right: unset;
    }
    a[href="calendar"] {
        margin: 0;
    }
    a[href="calendar"]:hover span,
    a[href="calendar"]:focus span {
        transform: none;
    }

    a[href="calendar"]:hover span::before,
    a[href="calendar"]:focus span::before {
        background: var(--complementary);/*END COLOUR AFTER HOVER*/
    }
}