Hi @Caner_Erden,
The Bootstrap theme is only intended as a base for development. It only implements the basic Bootstrap 3 components, with the intention that a developer will then do some of the final work to turn it into a proper theme. The logo in Bootstrap’s nav area is very small because the framework is designed for mobile-friendly apps, so you’ll need some additional styles if you’d like to use a large logo on the page.
Here’s some quick CSS code that demonstrates one way you could make a larger logo for larger screens:
@media(min-width: 768px) {
.navbar-brand {
display: block;
float: none;
clear: both;
margin: 0;
width: auto;
height: auto;
}
.navbar-brand img {
width: 100px;
}
.navbar-collapse {
clear: left;
}
}
To use this, you could copy it into a .css file and then upload it to the Journal Stylesheet area in the Settings > Website > Appearance area.