main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-evenly;
    box-sizing: border-box;
    margin: 2.5% 1.25% 2.5% 1.25%;
    max-width: 100%;
}

/* TITLES */

h1.h1_findus {
    margin: 0 0 1% 2em;
    font-size: 3em;
    align-self: flex-start;
    font-weight: 600;
}

h2.h2_contact_us {
    margin: 0 0 1% 3em;
    font-size: 2em;
    align-self: flex-start;
}



/* SECTIONS */

section.tour_form {
    margin-left: 4em;
    padding-left: 0;
    margin-bottom: 3em;
    align-self: flex-start;
    max-width: 100%;
    /* border-left: 3px solid #384544; */
}

section.contact_us {
    margin-left: 6em;
    padding-left: 0;
    margin-bottom: 3em;
    align-self: flex-start;
    max-width: 100%;
}

section.office_detail {
    margin-left: 9em;
    padding-left: 1em;
    margin-bottom: 3em;
    align-self: flex-start;
    border-left: 3px solid #384544;
    max-width: 100%;
}




/* TOUR AREA */

form.book_tour {
    background-color: #f2f1f1;
    border: 0.0625em solid #384544;
    padding: 2em;
    border-radius: 0.5em;
    max-width: 50em;
    margin: 0 5em;
}

div.tour_r1,
div.tour_r2,
div.tour_r3 {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25em;
    margin-bottom: 1.25em;
    align-items: center;
}

label.tour_label {
    color: #384544;
    font-weight: bold;
    min-width: 7.5em;
}

input.tour_input {
    flex: 1;
    min-width: 12.5em;
    padding: 0.625em;
    border: 0.0625em solid #b9cfb9;
    border-radius: 0.25em;
    background-color: white;
    color: #384544;
}

select.tour_input {
    height: 2.5em;
    border-color: #b9cfb9;
}

button.tour_submit {
    background-color: #384544;
    color: #f2f1f1;
    border: none;
    padding: 0.75em 1.5625em;
    border-radius: 0.25em;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.3s;
    margin-left: auto;
}

button.tour_submit:hover {
    background-color: #2a3434;
}

.tour_input.error {
    border-color: #e74c3c;
}

.error_message {
    color: #e74c3c;
    font-size: 14px;
    margin-top: 5px;
    display: none;
}

.tour_input.error+.error_message {
    display: block;
}

.tour_submit {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 14px 25px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-top: 10px;
}

.tour_submit:hover {
    background-color: #2980b9;
}

.tour_submit:disabled {
    background-color: #bdc3c7;
    cursor: not-allowed;
}

.validation_status {
    margin-top: 20px;
    padding: 15px;
    border-radius: 6px;
    display: none;
}

.status_valid {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.status_invalid {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* GET IN TOUCH AREA */

h3.h3_contact_us {
    font-size: 1.5em;
}

section.contact_us div.div_card_contact_us {
    margin-left: 3em;
    padding-left: 1em;
    align-self: flex-start;
    border-left: 3px solid #384544;
}

ul.ul_contact_us {
    list-style-type: none;
    font-size: 1.25em;
    max-height: max-content;
}

li.li_contact_us_card {
    margin: 0.5em 0 0.5em 1em;
    font-weight: bold;
}

a.contact_method {
    font-weight: lighter;
    color: #384544;
    text-decoration: none;
}

p.p_office_detail {
    font-size: 1.25em;
}

a.contact_method:hover {
    color: #467470;
}



/* LOCATION AREA */

section.office_detail div.div_card_contact_us {
    margin-left: 1.5em;
    padding-left: 0em;
    align-self: flex-start;
}

iframe {
    width: 50em;
    height: 35em;
}



/* MEDIA */

@media (max-width: 1599.98px) {
    /* h1.h1_findus {
        margin: 0 0 0.75em 1%;
        font-size: 2.5em;
    }

    h2.h2_contact_us {
        margin: 1% 0 0.25em 1%;
        font-size: 2em;
    }

    */

    section.tour_form {
        margin-left: 9em;
        padding-left: 0;
        margin-bottom: 3em;
        max-width: 100%;
        display: flex;
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        align-self: flex-start;
    }

    form.book_tour {
        padding: 2em;
        border-radius: 0.5em;
        max-width: 100%;
        margin: 0 0;
    }

    /*
    h3.h3_contact_us {
        font-size: 1.5em;
    }

    section.contact_us {
        margin-left: 2%;
        padding-left: 0;
        align-self: flex-start;
        border-left: none;
    }

    section.contact_us div.div_card_contact_us {
        margin-left: 0;
        padding-left: 0;
        align-self: flex-start;
    }

    section.office_detail {
        margin-left: 2%;
        padding-left: 0;
        margin-bottom: 3em;
        align-self: flex-start;
        border-left: 3px solid #384544;

    } */

    iframe {
        width: 45em;
        height: 35em;
    }
}

@media (max-width: 1399.98px) {

    /* h1.h1_findus {
        margin: 0 0 0.75em 1%;
        font-size: 2.5em;
    }

    h2.h2_contact_us {
        margin: 1% 0 0.25em 1%;
        font-size: 2em;
    }
*/
    section.tour_form {
        margin-left: 9em;
        padding-left: 0;
        margin-bottom: 3em;
        max-width: 100%;
        display: flex;
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        align-self: flex-start;
    }

    /* 
    form[action="book_tour"] {
        padding: 2em;
        border-radius: 0.5em;
        max-width: 60%;
        margin: 0 0;
        display: flex;
        align-items: center;
        flex-direction: column;
        justify-content: center;
    }

    h3.h3_contact_us {
        font-size: 1.5em;
    }

    section.contact_us {
        margin-left: 2%;
        padding-left: 0;
        align-self: flex-start;
        border-left: none;
    }

    section.contact_us div.div_card_contact_us {
        margin-left: 0;
        padding-left: 0;
        align-self: flex-start;
    }

    section.office_detail {
        margin-left: 2%;
        padding-left: 0;
        margin-bottom: 3em;
        align-self: flex-start;
        border-left: 3px solid #384544;

    }

    */
    iframe {
        width: 40em;
        height: 30em;
    }
}

@media (max-width: 1199.98px) {
    h1.h1_findus {
        margin: 0 0 0.75em 1%;
        font-size: 2.5em;
    }

    h2.h2_contact_us {
        margin: 1% 0 0.25em 1%;
        font-size: 2em;
    }

    section.tour_form {
        margin-left: 2%;
        padding-left: 0;
        margin-bottom: 3em;
        max-width: 100%;
        display: flex;
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        /* border-left: 3px solid #384544; */
    }

    form.book_tour {
        padding: 2em;
        border-radius: 0.5em;
        max-width: 60%;
        margin: 0 0;
        display: flex;
        align-items: center;
        flex-direction: column;
        justify-content: center;
    }

    h3.h3_contact_us {
        font-size: 1.5em;
    }

    section.contact_us {
        margin-left: 2%;
        padding-left: 0;
        align-self: flex-start;
        border-left: none;
    }

    section.contact_us div.div_card_contact_us {
        margin-left: 0;
        padding-left: 0;
        align-self: flex-start;
    }

    section.office_detail {
        margin-left: 2%;
        padding-left: 0;
        margin-bottom: 3em;
        align-self: flex-start;
        border-left: 3px solid #384544;

    }

    iframe {
        width: 35em;
        height: 25em;
    }
}

@media (max-width: 991.98px) {
    h1.h1_findus {
        margin: 0 0 0.75em 1%;
        font-size: 2.5em;
    }

    h2.h2_contact_us {
        margin: 1% 0 0.25em 1%;
        font-size: 2em;
    }

    section.tour_form {
        margin-left: 2%;
        padding-left: 0;
        margin-bottom: 3em;
        max-width: 100%;
        display: flex;
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        /* border-left: 3px solid #384544; */
    }

    form.book_tour {
        padding: 2em;
        border-radius: 0.5em;
        max-width: 60%;
        margin: 0 0;
        display: flex;
        align-items: center;
        flex-direction: column;
        justify-content: center;
    }

    h3.h3_contact_us {
        font-size: 1.5em;
    }

    section.contact_us {
        margin-left: 2%;
        padding-left: 0;
        align-self: flex-start;
        border-left: none;
    }

    section.contact_us div.div_card_contact_us {
        margin-left: 0;
        padding-left: 0;
        align-self: flex-start;
    }

    section.office_detail {
        margin-left: 2%;
        padding-left: 0;
        margin-bottom: 3em;
        align-self: flex-start;
        border-left: 3px solid #384544;

    }


    iframe {
        width: 30em;
        height: 25em;
    }
}

@media (max-width: 767.98px) {
    h1.h1_findus {
        margin: 0 0 0.75em 1%;
        font-size: 2.5em;
    }

    h2.h2_contact_us {
        margin: 1% 0 0.25em 1%;
        font-size: 2em;
    }

    section.tour_form {
        margin-left: 2%;
        padding-left: 0;
        margin-bottom: 3em;
        max-width: 100%;
        display: flex;
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        /* border-left: 3px solid #384544; */
    }

    form.book_tour {
        padding: 2em;
        border-radius: 0.5em;
        max-width: 60%;
        margin: 0 0;
        display: flex;
        align-items: center;
        flex-direction: column;
        justify-content: center;
    }

    h3.h3_contact_us {
        font-size: 1.5em;
    }

    section.contact_us {
        margin-left: 2%;
        padding-left: 0;
        align-self: flex-start;
        border-left: none;
    }

    section.contact_us div.div_card_contact_us {
        margin-left: 0;
        padding-left: 0;
        align-self: flex-start;
    }

    section.office_detail {
        margin-left: 2%;
        padding-left: 0;
        margin-bottom: 3em;
        align-self: flex-start;
        border-left: 3px solid #384544;

    }

    iframe {
        width: 25em;
        height: 15em;
    }
}

@media (max-width: 575.98px) {
    h1.h1_findus {
        margin: 0 0 0.75em 1%;
        font-size: 2em;
    }

    h2.h2_contact_us {
        margin: 1% 0 0.25em 1%;
        font-size: 1.5em;
    }

    section.tour_form {
        margin-left: 0;
        padding-left: 0;
        margin-bottom: 3em;
        max-width: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        /* border-left: 3px solid #384544; */
    }

    form.book_tour {
        padding: 2em;
        border-radius: 0.5em;
        max-width: 80%;
        margin: 0 0;
    }

    h3.h3_contact_us {
        font-size: 1.25em;
    }

    section.contact_us {
        margin-left: 2%;
        padding-left: 0;
        align-self: flex-start;
        border-left: none;
    }

    section.contact_us div.div_card_contact_us {
        margin-left: 0;
        padding-left: 0;
        align-self: flex-start;
    }

    section.office_detail {
        margin-left: 2%;
        padding-left: 0;
        margin-bottom: 3em;
        align-self: flex-start;
        border-left: 3px solid #384544;

    }

    p.p_office_detail {
        font-size: 1.25em;
    }

    iframe {
        width: 100%;
        height: 15em;
    }
}