body {
    color: #222222;
    font-size: 15px;
    line-height: 1.5;
    font-family: 'Open Sans', sans-serif;
}

h1 {
    font-size: 70px;
    font-weight: bold;
}

h2 {
    font-size: 44px;
    font-weight: bold;
}

h3 {
    font-size: 30px;
    font-weight: bold;
}

h4 {
    font-size: 15px;
    font-weight: bold;
}

p {
    line-height: 20px;
    margin-bottom: 1em;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 21px;
    padding: 30px;
}

.container {
    padding: 1em;
}

/* navbar */
nav {
    background-color: #222222;
}

nav .logo {
    background-color: #c78c06;
}

nav ul li {
    text-align: center;
    list-style-type: none;
}

nav ul li:hover {
    background-color: #c68e01;
}

nav a {
    text-decoration: none;
    display: block;
    color: #c68e01;
    font-size: 18px;
    padding: 15px;
}

nav a:hover {
    color: #222222;
}

nav form {
    display: flex;
    /* justify-content: center; */
    flex-wrap: nowrap;
    height: 40px;
}

nav form input {
    width: 100%;
    padding-left: 5px;
}

nav form button {
    background-color: #222222;
    color: #c68e01;
    border: 1px solid #c68e01;
    padding: 5px;
    width: 40px;
}

nav form svg {
    fill: #c68e01;
    width: 20px;
    height: 20px;
    stroke: #c68e01;
    stroke-width: 2px;
}

/* welcome */
.welcome {
    background-image: url(../images/main-banner.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 60px 0;
}

.welcome-content {
    background-color: rgba(0, 0, 0, 0.6);
    color: #fefefe;
    padding-top: 50px;
    padding: 50px 10px 10px 10px;
}

.welcome-content button {
    background-color: #c68e01;
}

/* about */
.about {
    background-color: #ffe6ac;
}

/* service */
.group-service {
    background-color: #ffe6ac;
    margin-bottom: 15px;
}

.group-service img {
    width: 100%;
}

.group-service .content {
    padding: 1em;
}

.group-service .content button {
    background-color: #222222;
    color: #fefefe;
}

/* vision */
.vision {
    background-image: url(../images/vision.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.vision .container {
    padding: 2em;
}

.vision .container h3 {
    color: #fefefe;
}

.vision .container p {
    color: #fefefe;
}

.vision .container button {
    background-color: #222222;
    color: #fefefe;
    border: 1px solid #c68e01;
}

/* team */
.team .group-team {
    background-color: #ffe6ac;
}

.team .group-team img {
    width: 100%;
}

.team .group-team:nth-child(odd) {
    padding: 10px 10px;
    margin-bottom: 15px;
}

.team .group-team:nth-child(odd) h4 {
    border-bottom: 2px solid #c68e01;
}

/* contact */
.contact-message form label {
    display: flex;
    flex-direction: column;
    margin-bottom: 10px;
}

.contact-message form input {
    height: 30px;
}

.contact-message form textarea {
    height: 120px;
    resize: none;
}

.contact-message form .send-button {
    font-size: 18px;
    margin: 10px auto;
    background-color: #222222;
    color: #c68e01;
    padding: 5px 5px;
}

.contact-operation table {
    width: 100%;
}

.contact-operation th {
    background-color: #ffe6ac;
    padding: 1em 0;
}

.contact-operation td {
    padding: 1em;
}

.contact-operation tr,
th,
td {
    border: 1px solid #222222;
}

/* footer */
footer {
    background-color: #222222;
    color: #c68e01;
}

footer p {
    margin-bottom: 0;
    margin-top: 1em;
}

footer a:visited {
    color: #fefefe;
}

.contact-location iframe {
    width: 100%;
    height: 300px;
}

/*
Tablet: 760
*/
@media screen and (min-width: 760px) {
    .container {
        max-width: 700px;
        margin: 0 auto;
    }
}

/*
Desktop: 1200px and up
*/
@media screen and (min-width: 1200px) {

    h1 {
        font-size: 80px;
        line-height: 118px;
    }

    h2 {
        font-size: 55px;
        line-height: 1;
    }

    h3 {
        font-size: 36px;
        line-height: 1;
        margin-bottom: 0.8em;
    }

    h4 {
        font-size: 18px;
        font-weight: bold;
    }

    p {
        font-size: 17px;
        line-height: 1.5;
    }

    .container {
        margin: 0 auto;
        padding: 2em 6em;
        max-width: 1200px;
    }

    /* navbar */
    nav .container {
        display: flex;
        align-items: center;
    }

    .logo {
        background: none;
    }

    nav ul {
        display: flex;
        flex-grow: 1;
    }

    nav ul li {
        flex-grow: 1;
    }

    .welcome-content h1 {
        padding-right: 100px;
    }

    /* about */
    .about .container {
        display: flex;
    }

    .about .container img {
        width: 50%;
    }

    .about .container .content {
        padding: 10px;
    }

    /* service */
    .services .grid-container {
        display: grid;
        grid-template-columns: repeat(6, 1fr);
        grid-gap: 10px;
    }

    .services h2 {
        grid-column: 1/ span 6;
    }

    .services .group-service:nth-child(2) {
        grid-column: 1/ span 3;
    }

    .services .group-service:nth-child(3) {
        grid-column: 4/ span 3;
    }

    .services .group-service:nth-child(4) {
        grid-column: 1/ span 2;
    }

    .services .group-service:nth-child(5) {
        grid-column: 3/ span 2;
    }

    .services .group-service:nth-child(6) {
        grid-column: 5/ span 2;
    }

    .team .grid-container {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }

    .team h2 {
        grid-column: 1 / span 2;
    }

    .team .group-team:nth-child(4) {
        order: 1;
    }

    .team .group-team:nth-child(odd) {
        padding-bottom: 0;
        margin: 0;
    }

    .team .group-team:nth-child(even) {
        line-height: 0;
    }

    /* contact */
    .contact .grid-container {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        grid-gap: 20px;
    }

    .contact h2 {
        grid-column: 1 / span 2;
    }

    .contact .contact-operation {
        grid-column: 1 / span 2;
        order: 1;
    }
}