:root {
    --main-color: #e50914;
    --secondary-color: #ad0a0a;
    --text-color: #aaa;
    --text-hover-color: #fff;
    --bg-color: #141414;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: .2s ease all;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg-color);
    font-family: 'Times New Roman', Times, serif;
    color: var(--text-hover-color);
}

header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 5px 10px;
}

header .logo {
    color: var(--main-color);
    font-family: "Arial Black", Times;
    font-size: 40px;
}

header nav a {
    text-decoration: none;
    color: var(--text-color);
    margin-right: 10px;
}

header nav a:hover {
    color: var(--text-hover-color);
}

#main-exhibition {
    font-size: 1.3em;
    background-repeat: no-repeat;
    background-position: right top;
    background-size: auto 100%;
    height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 20px;
    position: relative;
}

#main-exhibition .main-bg{
    background: linear-gradient(to right, rgba(0 , 0, 0, .5), rgba(0 , 0, 0, .5)100%), url("../images/spiderman-bg.jpg");
    width: 100%;
    height: 100%;
    z-index: -1;
    position: absolute;
    right: 0;
}

#main-exhibition .title {
    margin-top: 10%;
    margin-bottom: 10px;
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    text-transform: uppercase;
    font-size: 2em;
}

h2.category-title {
    font-size: 2em;
    margin-bottom: 15px;
}

#main-exhibition .description {
    margin-bottom: 40px;
}

#main-exhibition .button {
    background-color: rgba(0 , 0, 0, .5);
    border: none;
    color: #fff;
    padding: 15px 30px;
    margin-right: 30px;
    cursor: pointer;
    margin-bottom: 10px;
}

#main-exhibition .button i{
   margin-right: 5px;
}

#main-exhibition .button:hover {
    background-color: rgba(255 , 255, 255, .5);
    color: #000;
}

#main-exhibition .container {
    max-width: 650px;
}

#infos-container {
    height: 0;
    overflow: hidden;
}

#infos-container ul{
    margin: 20px 10px;
    padding: 20px;
    border: 1px solid var(--text-color);
}

#infos-container ul li{
    padding: 10px 0;
}

.container {
    margin: 20px;
}

@media only screen and (max-width: 768px) {
    #main-exhibition {
        background-size: auto 40%;
        height: 500px;
    }
    #main-exhibition .container{
        margin-top: 180px;
    }
}