.header {
    background-color: #edf2f4;
    border: 1px solid #d7e2e6;
    border-radius: 36px;
    width: 70px;
    height: calc(100vh - 6rem);
    position: fixed;
}
.header-item {
    display: grid;
    place-items: center;
    position: relative;
    width: 3rem;
    height: 3rem;
    border: 1px solid #d7e2e6;
    border-radius: 50%;
    background: #f4f7f8;
    transition: background 0.15s ease-in-out;
}
.header-item > i {
    font-size: 1rem;
    color: #25353a;
}

.header-item:hover {
    background: #e4ebee;
}
.header-item:last-of-type {
    margin-bottom: 0;
}
.logo-item {
    height: 50px;
    padding: 0.3rem;
    width: 50px;
}
.photo-item {
    display: grid;
    place-items: center;
    height: 50px;
    width: 50px;
    border: 1px solid #d7e2e6;
    border-radius: 50%;
    background: #f4f7f8;
}