* {
       box-sizing: border-box;
}

aside {
    float: right;
    background: rgb(212, 224, 253);
    width:250px;
    top: 0px;
    left: 0px;
    height: 320px;
    color: black;
    z-index: 0px;
    margin: 0px;
    padding:0px;
    width:250px;
}
main {
    width: 1080px;
    background-color: white;
    padding:30px;
    margin:30px;
}
img {
   width: 500px;
   float: left;

}
body {
    margin: 0px;
    padding: 0px;
    line-height: 1.5;
}
aside a {
    color: #3498db;
    text-decoration: none;
    display: block;
    padding: 8px 0;
    border-radius: 4px;
}

aside a:hover {
    color: #ecf0f1;
    background-color: #34495e;
    padding-left: 10px;
}