*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
   /* background: linear-gradient( #0c288e, #c114be);*/
    background-attachment: fixed;
    background-repeat: no-repeat;
    background: #202c55;
    display: flex;
    flex-direction: column;
}
header{
    background: #202c55;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    color: aliceblue;
    padding: 10px 10px 10px;
    width: 100%;
    height: 20px;
}

header .nav{
    display: flex;
    flex-direction: row;
    color: white;
}

header .nav li{
    padding-right: 10px;
    list-style: none;
    color:rgb(168, 78, 23);
}

header .nav li a{
    text-decoration: none;
    color: rgb(168, 78, 23);
}

#active{
/*active link color*/
color: aliceblue;
}

header .nav li a:active,
header .nav li a:hover{
    background:linear-gradient(45deg, #0c288e, #c114be);
    color:aqua;
}
main{
    display: flex;
    flex-wrap: wrap;
    margin-top: 40px;
}
.wallpaper img{
    margin: 5px 5px 5px 5px;
    height: 200px;
    width: 200px;
    border-radius: 4px;
}

.wallpaper img:hover{
    width: 250px;
    height: 250px;
}