:root {
    /* Color */
    --whit-color: #ffffff;
    --grey-color: #9e9e9e;

    /* Size */
    --side-padding: 12px;

    /* Font Size */
    --font-large: 16px;
    --font-medium: 14px;
}

* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

body {
    font-family: 'ClanWeb W03 Medium', sans-serif;
    font-size: 14px;
    line-height: 22px;
}

a {
    color: var(--whit-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.flex-wrapper {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
    justify-content: flex-start;
    background-image: url(../assets/image/background_image.jpg);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    border-top: 6px solid var(--grey-color);
}

.container {
    width: 1440px;
    margin: 0 auto;
}

.logo > img {
    width: 180px;
    background-color: var(--whit-color);
    padding: 15px 20px;
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
}

h1.title {
    padding-top: 75px;
    padding-bottom: 100px;
    color: var(--whit-color);
    font-size: 60px;
    line-height: 80px;
    text-transform: uppercase;
    text-align: center;
}


.button-section {
    width: 100%;
    text-align: center;
    margin-bottom: 150px;
}

.button-section > a {
    padding: 20px;
    margin: 20px;

    transition: transform 0.3s ease-out;
}
.button-section > a:hover img {
	transition: transform 0.3s ease-out;
}
.button-section > a img {
	transition: transform 0.3s ease-out;
}


.button-section > a:hover img {
    transform: translateY(-15px);   
}

footer  {
    margin-top: auto;
    background-color: var(--grey-color);
    padding: 40px 0;
    color: var(--whit-color);
}

footer > .container {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}

.contact-box {
    margin-bottom: 9px;
}

.contact-box > img {
    margin-right: 10px;
    vertical-align: top;
}

/* Responsible */
@media (max-width: 1440px) {
    .container {
        width: 100%;
        padding: 0 30px;
    }
    .button-section > a {
        width: 29%;
        margin: 0 1.5%;
        padding: 0;
    }
    .button-section > a > img {
        width: 29%;
    }
    h1.title {
        font-size: 50px;
        line-height: 66px;
    }
}

@media (max-width: 768px) {
    h1.title {
        font-size: 42px;
        line-height: 54px;
        padding-top: 70px;
        padding-bottom: 60px;
    }
    .button-section {
        margin-bottom: 50px;
    }
    .button-section > a {
        width: 100%;
        display: block;
        margin: 0;
        margin-bottom: 30px;
    }
    .button-section > a > img {
        width: 100%;
        max-width: 330px;
    }
    footer {
        padding-bottom: 0;
    }
    footer > .container {
        display: flex;
        flex-direction: column;
    }
    footer > .container > .footer-box {
        margin-bottom: 30px;
    }

}

@media (max-width: 376px) {
    h1.title {
        font-size: 33px;
        line-height: 45px;
    }

}