*{
    box-sizing: border-box;
}
html,body{
    scroll-behavior: smooth;
}
html{
    font-family: tahoma;
    background-color: skyblue;
    background-image: url(../images/img8.jpg);
    background-attachment: fixed;
}
a{
    text-decoration: none;
    color: deepskyblue;
}
a:hover{
    color: orangered;
}
input[type=text]{
    border: 1px solid black;
}
#container{
    background-color: rgba(255, 255, 255, 0.3);
}
h1{
    text-align: center;
    border-radius: 30px;
    background-color: deepskyblue;
    border: dodgerblue solid 3px;
    padding: 6px;
    margin: 10px;
    color: white;
}
video{
    box-shadow: rgb(38, 57, 77); 0px 20px 30px -10px
    border-radius: 50px;
}
p{
    text-align: justify;
}
#footer{
    direction: ltr;
    text-align: center;
    letter-spacing: 7px;
}
text-center{
    text-align: center;
}
#up{
    margin: 0 auto;
    width: 50px;
    aspect-ratio: 1;
    background-image: url(../images/img8.jpg);
}
#up:hover{
    background-position: top right;
}
#help{
    width: 20px;
    aspect-ratio: 1;
    background-image: url(../images/img8.jpg);
    background-position: -80px -191px;
}
#help:hover{

}
#ads{
    position: fixed;
    left: 0px;
    bottom: 0px;
    z-index: 99999999;
}
#main-menu ul{
    list-style-type: none;
    padding: 0px;
    margin: 0px;
}
#main-menu ul li{
}
#main-menu ul li{
    padding: 7px 9px;
    margin: 3px 0px;
    background-color: #0070C0;
    border-right: 7px solid #FFC000;
    display: block;
    color: white;
    width: 100%;
    height: 100%;
    transition: 0.2s;
}
#main-menu ul li a:hover{
    background-color: #FFC000;
    border-right: 7px solid #0070C0;
    box-shadow: -8px 8px 0px #FFC000;
}




#nav ul{
    list-style-type: none;
    margin: 0px;
    padding: 0px;
    text-align: center;
}
#nav ul li{
    display: inline;
}
#nav ul li a{
    padding: 5px 7px;
    display: block ;
    width: 100%;
    height: 100%;
    background-color: #333333;
    color: #FFFFFF;
    border-radius: 10px 10px 0px 0px;
    border-bottom: 2px solid #333333;
    transition: 0.3s;

}
#nav ul li a:hover{
    background-color: #FFC000;
    border-bottom: 2px solid #333333;
    box-shadow: 0px -3px 8px #ddd;
}