a{
    color: white;
    text-decoration: none;
}
body{
    background-image: url(background.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-attachment: fixed;
    background-size: cover;
    margin: 0;
    min-height: 100vh;

}

header{
    display: flex;
   justify-content:space-between;
    align-items: center;
    padding: 40px;
}
.logo{
    font-size: 30px;
}

ul{
   width: 40%;
   list-style: nonw;
   display: flex;
   justify-content: space-evenly; 
}

ul a{
    border-bottom: 2px solid transparent; 
}

ul a:hover {
border-bottom-color: white;
}

h3{
    color: white;
    width: 550px;
}
footer{
    margin-bottom: auto;
    padding: 28rem;
text-align: center;
color: white;
}