.navbar-header {
    display: flex;
    align-items: center;
}

.navbar-header h1 {
    display: inline-block;
    margin: 0;
    font-size: 24px;
    color: #777;
}

.navbar-header a>img {
    height: 40px;
    width: auto;
    vertical-align: middle;
    display: inline-block;
    border: none;
    transition: transform 0.3s ease;
    border-radius: 4px;
}

/* for expand height for logo */
.navbar-brand {
    height: auto;
}

/* add a hover effect */
.navbar-header a>img:hover {
    transform: scale(1.1);
}