* {
    margin: 0;
    padding: 0;
}

body {
    background-color: #eee;
    background-image: url(../img/roklinka.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
}
nav {
    width: 100%;
    height: 100px;
    background-color: #fff;
}
ul li {
    list-style: none;
    line-height: 100px;
    float: left;
} 
ul li a {
    display: block;
    text-decoration: none;
    font-size: 20px;
    font-family: system-ui;
    color: #1e1e1e;
    padding: 0 20px;
}
ul li a:hover{
    color: #c05959;
}
.box{
    width: 65%;
    padding: 1em;
    background-color: #074f57;
    color:white;
    border-radius: 1em;
    box-shadow: .5em .5em .5em lightblack; 
    margin: 5% auto 10% auto;  
}
.box p{
    margin: 1em;
}
.box h1{
    margin-bottom: 100px;
}
.spolecenstvo, .dve-veze, .navrat-krale{
    margin: 20px 0px 20px 0px;
    display: inline-block;
}
.text-tolkien{
    margin-bottom: 100px;
    font-size: large; 
    text-align: center;     
}
.text-tolkien h1{
    font-size: 2em;
}
img {
    border-radius: .5em;
    display: inline-block;
}
.tolkien{
    float: right; 
}
.spolecenstvo-text, .dveveze-text, .navratkrale-text{
    font-size: larger;
    text-align: center;
}
.spolecenstvo img,.dve-veze img,.navrat-krale img{
    border-radius: 3em;
}
.obrazky{
    text-align: center;
}
@media screen and (max-width:1650px) {
    .tolkien{
        float: none;
    }
    .text-tolkien h1{
        margin-bottom: 20px;
    }
    .text-tolkien{
        margin-bottom: 20px;
    }
}
@media screen and (max-width: 600px) {
    .spolecenstvo img,.dve-veze img,.navrat-krale img{
        width: 250px;
        height: 400px;
    }
    .text-tolkien{
        font-size: 1em;
    }
}
@media screen and (max-width:425px) {
    .spolecenstvo img,.dve-veze img,.navrat-krale img{
        width: 200px;
        height: 350px;
    }
    ul li a{
        font-size: 10px;
    }
}

@media screen and (min-width:2000px ) {
    ul li a{
        font-size: 30px;
    }
    .spolecenstvo img,.dve-veze img,.navrat-krale img{
        width: 450px;
        height: 600px;
    }
    .text{
        text-align: center;
        display: block;
    }
    .spolecenstvo-text,.dveveze-text,.navratkrale-text{
        font-size: 1.6em;
    }
    .nadpis{
        font-size: 2em;
    }
    .obrazky h2{
        font-size: 2em;
    }
    .text-tolkien{
        font-size: 1.6em;
    }
}