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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #3333;
    color: #333;
}

header {
    background: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

nav {
    background: #444;
    color: #fff;
    padding: 0.5rem 0;
}

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

nav ul li {
    display: inline;
    margin: 0 1rem;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
}


.box1 {
    width: 80%;
    margin: 1rem auto;
    overflow: hidden;
}

main {
    float: left;
    width: 55%;
    background: #fff;
    padding: 1rem;
    margin-right: 2%;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

aside {
    float: right;
    width: 43%;
    background: #fff;
    padding: 1rem;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

footer {
    clear: both;
    background: #333;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    margin-top: 1rem;
}

h1, h2, h3 {
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
}

#priklad {
    margin-top: 2rem;
    padding: 1rem;
    background: #e4e4e4;
    border-left: 5px solid #50b3a2;
}

.float-priklad {
    margin-top: 1rem;
}

.float-priklad img {
    float: left;
    margin: 0 1rem 1rem 0;
    border: 1px solid #ccc;
}

.float-priklad p {
    overflow: hidden;
}


.box1 {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    margin: 0 auto;
    max-width: 1200px;
}

.solid-border {
    border: 2px solid #36bc63;
   color: black;
}

.dotted-border {
   border: 2px dotted #36bc63;
   color: black;
}

.dashed-border {
   border: 2px dashed #36bc63;
   color: black;
}

.double-border {
   border: 4px double #36bc63;
   color: black;
}

.groove-border {
   border: 4px groove #36bc63;
   color: black;
}

.ridge-border {
   border: 4px ridge #36bc63;
   color: black;
}

.inset-border {
   border: 4px inset #36bc63;
   color: black;
}

.outset-border {
   border: 4px outset #36bc63;
   color: black;
}

.rounded-border {
   border: 2px solid #36bc63;
   border-radius: 15px;
   color: black;
}

.box {
    width: 250px;
    padding: 20px;
    margin: 10px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h2 {
    text-align: center;
    color: black;
}

img{
    height: 200px;
}


.zeleny{
    border: green solid 1px;
    background-color: green;
    color: green;
    height: 200px;
}

h1{
    color: #50b3a2;
}

h2{
    color: #50b3a2;
}