*{
    margin: 0;
    padding: 0;
    font-family: 'Vazirmatn', sans-serif;
}

html{
    height: 100%;
    scroll-behavior: smooth;
}

body{
    height: 100%;
    background: #ffffff;
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

nav{
    width: 100%;
    top: 0;
    position: fixed;
    height: 85px;
    background-color: white;
    box-shadow: 2px 2px 4px rgba(0,0,0,0.11);
}

nav ul{
    float: right;
}

nav img {
    float: left;
    padding: 5px 0px 5px 10px;
    height: 75px;
    width: 75px;
    position: absolute;
}

nav ul li{
    float: left;
    list-style: none;
    position: relative;
}

nav ul li a{
    font-weight: 700;
    color: #272727;
    font-size: 20px;
    text-decoration: none;
    padding: 28px;
    display: block;
}

nav ul li a:hover{
    background-color: #e2eafc;
} 

nav ul li ul{
    display: none;
    position: absolute;
    background-color: #abc4ff;
    padding: 7px;
    border-radius: 0px 0px 12px 12px;
    width: 100%;
}

nav ul li:hover ul{
    display: block;
}

nav ul li ul li a{
    color: #14213d;
    padding: 16px 20px;
    border-radius: 10px;
}

nav ul li ul li a:hover{
    background-color: #8cafff;
}

main {
    text-align: center;
    margin-top: 120px;
    width: 50%;
    margin-left: auto;
    margin-right: auto;
}

main h1 {
    font-size: 45px;
}

.slideshow {
    display: flex;
    width: 100%;
}

.slideshow img {
    height: 400px;
    width: 100%;
    transition: all 0.15s ease;
}

main p {
    text-align: left;
}

main button {
    border-radius: 10px;
    border: 5px #000000;
}

main a {
    text-decoration: none;
}

footer {
    text-align: center;
    margin-top: 50px;
}

footer ul {
	list-style-type: none;
    margin-top: 10px;
}

footer li {
	display: inline;
	padding: 20px;
    font-size: 50px;
}

footer a {
	color: #000000;
	text-decoration: none;
}

footer a:hover {
	color: #1d3557;
}







.back-to-top-link {
    display: inline-block;
    text-decoration: none;
    font-size: 2rem;
    line-height: 3rem;
    text-align: center;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background-color: #d6e3f0;
    padding: 0.25rem;
    margin-left: 95%;
  }