Я решил!!!
Кому интересно:
body {
background: #a6fa52fa;
}
aside {
float: left;
background: #5c8a21fa;
width: 17%;
padding: 2.5%;
height: 100vh;
color: #fff;
border-right: 5px solid #4d4d4d;
top: 0
}
aside img {
width: 65%;
float: left;
position: relative;
left: -40px;
top: -30px;
}
aside ul {list-style: none}
aside ul li {
color: #fff;
display: block;
margin-top: 20px;
transition: all .6s ease;
}
aside ul li, aside ul a {text-decoration: none;}
aside ul li:hover, aside ul a:hover {
color: #eb5959;
text-decoration: none;
transform: scale(1.05);
}
.features {
margin-left: 100em;
}
.box {
position: fixed;
}