body {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    margin: 0;
    padding: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
    background-color: pink;
}

.logo {
    width: 130px;
    position: absolute;
    left: 10px;
    top: 0;
    height: auto;
}

header {
    text-align: center;
    background-color: pink;
    padding: 20px;
    font-size: 20px;
    font-weight: bold;
    position: relative;
}

nav {
    text-align: center;
    margin: 20px 0;
}

.menu {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 100px;
    background-color:lightskyblue;
    border: 3px dashed black;
}

.menu li {
    position: relative;
}

.menu a {
    text-decoration: none;
    background-color:lightskyblue;
    padding: 30px 20px;
    border-radius: 0;
    color: black;
    font-weight: bold;
    display: inline-block;
    transition: background-color 0.3s;
}

.menu a:hover {
    background-color: hotpink;
}

.dropdown {
    position: relative;

}

.submenu {
    padding: 0;
    margin: 0;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    display: none;
    background-color: lavender;
    box-shadow: 0 2px 5px rgba(0, 0, 0);
    width: 150px;
    text-align: center;
}

.submenu li {
    display: block;
    border-top: 1px plum;
}

.submenu a {
    display: block;
    padding: 10px;
    width: 100%;
    border-radius: 0;
}
.submenu a:hover {
    background-color: hotpink;
}
.dropdown:hover .submenu {
    display: block;
}

.menu a.active {
    background-color: #a799c6;
}

.info-container {
    display: flex;
    justify-content: space-between;
    margin: 5px;
    gap: 5px;
    color: black;
    font-size: 1em;
}

.info-box {
    background-color: rgb(162, 128, 230);
    padding: 10px;
    border-radius: 0;
    width: 100%;
    border: 3px dashed black;
}


html, body {
    height: 100%;
    margin: 0;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

footer {
    text-align: center;
    font-weight: bold;
    padding: 20px;
    background-color: hotpink;
    border: 3px dashed black;
}

#tekst {
    background-color: lavender;
    padding: 15px;
    border: 2px solid black;
    width: 300px;
    position: relative;
    left: 0;
    transition: all 0.5s ease-in-out;
}

#pilt {
    display: block;
    margin: 20px auto;
    cursor: grab;
}

#koord {
    text-align: center;
    font-size: 18px;
    font-weight: bold;
    margin-top: 10px;
}

button, input[type="button"] {
    background-color: lightskyblue;
    border: 2px solid black;
    padding: 10px 20px;
    margin: 10px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
}

button:hover, input[type="button"]:hover {
    background-color: hotpink;
    transform: scale(1.05);
}

.button-container {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 20px 0;
}

.info-container { /* появляется и скрывается инфоблок */
    display: none;
}

#explanation { /* это раздел "Как работает jQuery?" */
    background-color: #a2a2fd;
    padding: 20px;
    border: 2px solid black;
    margin: 20px;
    text-align: left;
}

#explanation h2 {
    text-align: center;
}

#explanation ul {
    list-style: square;
    padding-left: 20px;
}

#explanation ul li {
    margin-bottom: 10px;
}

h2 {
    display: block;
    text-align: center;
    width: 100%;
    margin: 20px auto;
}