Ghost/ghost/admin/app/styles/layouts/main.scss

// Layout
.gh-viewport {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.gh-nav {
    flex: 0 0 220px;
    display: flex;
    flex-direction: column;
    border-right: #E1E1E1 1px solid;
    background: #F6F6F6;
}

.gh-main {
    position: relative;
    flex-grow: 1;
    display: flex;
}

//GH-NAV

.gh-nav-menu {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    padding: 15px;

    i {
        height: 11px;
        width: 11px;
        margin-right: 8px;
        font-size: 11px;
        line-height: 11px;
    }
}
.gh-nav-menu:hover { cursor: pointer; }

.gh-nav-menu-icon {
    flex-shrink: 0;
    margin-right: 10px;
    width: 34px;
    height: 34px;
    background-size: 34px;
    background-color: #222;
    border-radius: 4px;
}

.gh-nav-menu-details {
    flex-grow: 1;
    padding-right: 10px;
}

.gh-nav-menu-details-blog {
    margin-bottom: 1px;
    font-size: 1.5rem;
    line-height: 1.3em;
    font-weight: 600;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}

.gh-nav-menu-details-user {
    font-size: 1.2rem;
    line-height: 1.2em;
    color: $midgrey;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}

.gh-nav-body {
    flex-grow: 1;
    overflow-y: auto;
}

.gh-nav-search {
    position: relative;
    margin: 0 15px 10px;
}

.gh-nav-search-input {
    padding: 5px 8px;
    border-radius: 4px;
    font-size: 1.3rem;
}

.gh-nav-search-button {
    display: flex;
    align-items: center;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    padding: 0 6px 0 5px;

    i {
        width: 16px;
        height: 16px;
        font-size: 13px;
        color: $midgrey;
        transform: rotate(90deg);
        transition: color 0.2s ease;
    }

    &:hover i {
        color: $darkgrey;
    }
}

.gh-nav-list {
    list-style: none;
    margin: 0;
    padding: 0 15px 0 0;
    font-size: 1.3rem;
    line-height: 1.5em;
}

.gh-nav-list-h {
    margin-top: 15px;
    padding: 5px 10px 5px 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #828282;
    font-size: 1.2rem;
    line-height: 1.1em;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}

.gh-nav-list a {
    display: flex;
    align-items: center;
    padding: 5px 10px 5px 15px;
    color: $darkgrey;
    border-radius: 0 4px 4px 0;
    transition: none;
}

.gh-nav-list .active {
    color: #fff;
    background: lighten($blue, 10%);
}

.gh-nav-list a:not(.active):hover {
    color: $darkgrey;
    background: lighten($blue, 30%);
}

.gh-nav-list i {
    width: 15px;
    height: 15px;
    margin-right: 8px;
    font-size: 15px;
    text-align: center;
}

.gh-nav-footer {
    flex-shrink: 0;
    align-items: center;
    height: 40px;
    padding: 0 20px;
    border-top: #E1E1E1 1px solid;
}

//--------------------------------------------------------------

.gh-view {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.view-header {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 65px;
    padding: 0 20px;
    border-bottom: #E1E1E1 1px solid;
}

.view-title {
    margin: 0;
    padding: 0;
    font-size: 2rem;
    line-height: 1.2em;
    font-weight: 400;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}

.view-actions {
    display: flex;
}

.view-container,
.view-content {
    flex-grow: 1;
    overflow-x: hidden;
    overflow-y: auto;
}

.view-content {
    padding: 20px;
}