How to enlarge logo in wordpress site

Looks like your theme support is here: https://themeisle.com/forums/

Go to your wordpress stylesheet, style.css. Around line 957 thereis

.navbar-brand > img {
    display: inline-block;
    max-height: 56px;
}

Just change max-height to any bigger value you want like

.navbar-brand > img {
    display: inline-block;
    max-height: 100px;
}

Hi @andrew and @sachinyadav82,
Thanks a lot both of you. I install simple custom Css plugin and use code –

.navbar-brand > img {
max-height: 70px;
}

header .navbar-brand {
height: 80px;
}

and adjusted both heights.
i can also do same thing without plugin just by changing same parameters in my css (as Sachinyadav mention).

What you think using plugin is good or change in theme css is good?
Does plugin make any load on my site??

Thanks