practice-header.css

* {
   box-sizing: border-box;
}

body {
   margin: 0;
   padding: 0;
   font-family: 'Poppins', sans-serif;
}

header {
   background-color: brown;
   max-height: 100px;
   display: flex;
   flex-direction: row;
   align-items: center;
   justify-content: space-between;
   color: black;
   padding: 20px;
}

header h1 {
   margin: 0;
   font-size: 35px;
   font-weight: 650;
}

/* header li {
   color: blue;
} */

header nav {
   width: 70%;
   max-width: 250px;
}

header nav ul {
   display: flex;
   justify-content: space-between;
   list-style-type: none;
   padding: 0;
}

header li a {
   text-decoration: none;
   color: burlywood;
   font-size: 14px;
}

.pic {
   display: flex;
   align-items: center;
}

.pic img {
   width: 50px;
   height: 50px;
   border-radius: 50%;
   margin-right: 5px;
}

main {
   min-height: calc(100vh - 100px);
}