* {
   margin: 0;
   padding: 0;
   box-sizing: border-box;
}
main {
   height: calc(100vh - 80px);
   background: url("./images/cars.jpg");
   background-position: center center;
   background-repeat: no-repeat;
   background-size: cover;
   background-attachment: fixed;
}
footer {
   height: 80px;
}

header {
   background-color: black;
   color: #fff;
   display: flex;
   justify-content: space-evenly;
   align-items: center;
   height: 60px;
}
header ul {
   list-style-type: none;
   display: flex;
   justify-content: center;
}
header ul li {
   padding: 0.5rem 1rem;
}
.active {
   background-color: cyan;
   color: #000;
}
main section {
   position: relative;
   top: 12rem;
   left: 8rem;
   color: #fff;
   display: inline-block;
}
main section h2 {
   margin: 1rem 0;
}
main section h3 {
   padding: 0.5rem 1rem;
}

footer {
   background-color: #000;
   text-align: left;
}
footer ul {
   padding: 1rem 0;
   color: #fff;
   list-style-type: none;
   display: flex;
   align-items: center;
   justify-content: space-evenly;
}

footer .li-title {
   color: cyan;
}