body{
    box-sizing: border-box;
    position: relative;
    min-height: 100vh;
    margin: 0;  
    padding-bottom: 150px;
}

body nav {
    position: sticky;
    top: 0;
}

.banner, li a, footer, footer a {
    box-sizing: border-box;
    font-family:'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
    color:rgb(255, 255, 255);
    text-decoration: none;
}

.banner {
    height:300px;
    background-position-y: center;
    background-size:100%;
}
.banner > p{
    margin: 0px;
    color:rgb(255, 255, 255);
    padding: 125px;
    text-align: center;
    font-size: 50px;
    line-height: 50px;
    background: rgba(0, 0, 0, .4); 
}

ul {
    width: 100%;
    display: flex;
    justify-content: center;
    box-sizing: border-box;
    padding: 20px;
    margin: 0;
    background-color: rgb(46, 44, 59);
    margin: 0 auto;
}
li {  
    list-style: none;
}

li a {  
    height: 25px;
    padding: 0 10px;
    font-size: 25px;
}

li a:hover {
    background-color: rgb(255, 255, 255);
    color: rgb(46, 44, 59);
    padding: 20px 10px;
}

section {
    width: 50%;
    margin: 0 auto;
}

h1 {
    font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 45px;
}

h2 {
    font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

img {
    width: 33%;
    float: left;
    margin-right: 20px;
    margin-bottom: 23px;
    padding: 0px 40 0px 40px
}

footer {
    background: rgb(46, 44, 59);
    margin-top: 50px;
    height: 100px;
    padding: 40px 0 40px 0;
    position: absolute;
    bottom: 0;
    width: 100%;

    text-align: center;
    font-size: 13px;
}

p {
    font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

}