ul {
 margin: 0;
 padding: 20px;
 margin-left: 10px;
}
*{
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}
nav{
    width: 200%;
    height: 60px;
    background-color: rgb(54, 54, 54);
    float: left;
}
ul li{
 list-style: none;
 float: left;
 height: 50px;
}

ul li a{
    text-decoration: none;
    padding: 0 20px;
    font-style:initial;
    color:whitesmoke ;
    font-size: large;
}
.menu > li > a:hover{
    border-bottom: 7px;
    border-bottom-style: solid;
    border-bottom-color: white  ;
    border-bottom-width: 2px;
    background-color: rgb(194, 196, 196);
    color: black;
    border-radius: 1cm;
    transition: all .5s;
}

.menu > li{
    display: inline-block;
    position:static;
}

body{
    background-color: rgb(194, 196, 196);
    background-image: url('./media/audi-f1-.jpg');
    background-repeat: no-repeat;
    background-size: cover;
    position:relative;
    overflow-x: hidden;
}

.background-image{
    height: 100%;
    float: left;
}



.Title{
    border-bottom: 7px;
    border-bottom-style: solid;
    border-bottom-color: white  ;
    border-bottom-width: 2px;
    background-color: rgb(194, 196, 196);
    color: black;
    border-radius: 1cm;
    transition: all .25s;
    
}
.Home{
    height: 300px;
    padding: 7px;
    margin: 50px;
    border-bottom: 7px;
    border-bottom-style: solid;
    border-bottom-color: white  ;
    border-bottom-width: 2px;
    background-color: rgb(194, 196, 196);
    color: black;
    border-radius: 1cm;
}
.Topic{
    height: 300px;
    padding: 3px;
    margin: 50px;
}

.About{
    height: 300px;
    padding: 7px;
    margin: 50px;
}

.Contact{
    height: 300px;
    padding: 7px ;
    margin: 50px;
}

.stair{
    position: absolute ;
    background: #333;
    width: 80%;
    visibility: hidden;
    opacity: 0;
    transition: opacity 1s;
    border-bottom-left-radius: 1cm;
    border-bottom-right-radius: 1cm;
    margin-top: 15px;
}
.stair li a{
    display: block;
    padding: 20px;
    color: #fff;
    text-decoration: none;
    height: 0px;
}

.menu li:hover .stair{
    display: block;
    visibility: visible;
    opacity: 2;
    float: left;
    z-index: 1;
    width: 150px;
}
.stair > li > a:hover{
    border-bottom: 1px;
    border-bottom-style: solid;
    border-bottom-color: white  ;
    border-bottom-width: 5px;
    transition: all .25s;
    display: block;
    z-index: 2;
    float: left;
    opacity: 1;
}


.logo{
    width: 40px;
}
.logo2{
    height: 10px;
}

.textaco1{
    background-color: black ;
    opacity: 0.85;
    border-radius: 1cm;
    float: left;
    margin-top: 260px;
    margin-left: 5%;
    width: 40%;
    padding: 5px;
    position:fixed;
    color: white;
    border-bottom: 7px;
    border-style: solid;
    border-bottom-color: red;
}
.text-left-wing{
    height: 0px;
    width: 50%;
    margin-left: 5%;
    float: left;
    margin-top: 115px;
    z-index: 1;
    font-family: sans-serif;
    color: white;
}
.textaco2{
    background-color: white ;
    opacity: 0.85;
    border-radius: 1cm;
    float: left;
    margin-top: 370px;
    margin-left: 55%;
    width: 40%;
    padding: 5px;
    position: fixed;
    color: black;
    border-bottom: 7px;
    border-style: solid;
    border-bottom-color: red;
}
.button{
    background:none;
    border: 7px;
    color: #fff;
    padding: 0px;
    font-size: large;
    margin-right: 50px;
    margin-left: 40px;
    border-bottom: 7px;
       border-bottom-style: solid;
       border-bottom-color: white  ;
       border-bottom-width: 2px;
       background-color: rgb(194, 196, 196);
       color: black;
       border-radius: 1cm;
}
.button:hover{
    border-bottom: 7px;
    border-bottom-style: solid;
    border-bottom-color: white  ;
    border-bottom-width: 2px;
    background-color: rgb(194, 196, 196);
    color: black;
    border-radius: 1cm;
    transition: all .5s;
}



.main{
    overflow-y: hidden;
    padding-bottom: 10px;
}
.footer{
    border: none;
    color: white;
    position: sticky;
    height: 80px;
    margin-top: 560px;
    margin-bottom: 0;
}
.instagram{
    height: 50px;
}
.facebook{
    height: 50px;
    margin-left: 50px;
}
.twitter{
    height: 50px;
    margin-left: 50px;
}