:root {
    --dc_primary_color: #0079EF;
    --white: #FFFFFF;
    --bg_gray: #1C1C1C;
    --bg_red: #F0464F;
}


/* common styles */

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

main {
    position: relative;
}

/* text styles */

@font-face {
    font-family: "Obelix";
    src: url(fonts/ObelixPro-cyr.ttf);
}

@font-face {
    font-family: "univers-regular";
    src: url(fonts/UniversRegular.ttf);
}

@font-face {
    font-family: "univers-bold";
    src: url(fonts/UniversBold.ttf);
}

h2 {
    font-size: 48px;
    font-family: "Obelix";
}

h3 {
    font-size: 24px;
    font-family: "univers-bold";
}

h4 {
    font-size: 20px;
    font-family: "univers-regular";
}

h6 {
    font-size: 16px;
    font-family: "univers-regular";
}
/* text styles */


/* common styles */


/* header start */

header {
    position: fixed;
    z-index: 1;
    width: 100%;
    background-color: var(--dc_primary_color);
    height: 100px;
    display: flex;
    padding: 20px 100px;
    align-items: center;
    justify-content: space-between;
}

nav {
    display: flex;
    gap: 80px;
    align-items: center;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
}

header a {
    font-size: 20px;
    color: var(--white);
    font-family: "Obelix";
    transition: all 200ms ease;
}

header a:hover {
    opacity: 0.8;
}

/* header end */


/* hero start */

.hero {
    position: sticky;
    z-index: -1;
    top: 0;
    background-image: url(imgs/hero-bg.jpg);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    height: 100vh;
}

/* hero end */

/* sec1 start */

.sec1 {
    z-index: 2 ;
    background-color: var(--bg_gray);
    padding: 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 60px;
}

.authors {
    display: flex;
    gap: 24px;
}

.author {
    background-color: var(--bg_red);
    border-radius: 24px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.author-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: start;
}


.sec1 h4 {
    color: var(--white);
    text-align: center;
}

.sec1 h3 {
    color: var(--white);
}

.sec1 h6 {
    color: var(--white);
}

/* sec1 end */

/* part 1 start */

/* part 1 end */