1) How child theme works
Let's say you want to make some change on theme's file footer.php but you are afraid if you make changes to this file in theme and if theme release an update the changes will be lost as file would be overwriten. So you copy footer.php and place that in child theme. Once any file exists in Child theme footer.php or any file which you copied from parent theme. Then the parent theme's file will be ignored and only child theme file will work always. Which means update to parent theme will not effect your work and you will not lose your customizations. Child theme have all features of its parent theme and any further features you include in child theme they are also part of child theme. i hope this clears you can use child theme if you want to make customization in parent theme.
2) Change font size of section title.
While king composer gives you ability to create your own section titles and design them your way but we also included a special section title element for Veterinary WordPress theme. Which fits with design and easy to include for customers as it adopt styling of color, size from style.css You can add following CSS in appearance >> customize >> additional CSS and add the following CSS to play with font size of section title. These are titles on home page and other sections on side wide i am not talking about page title here.
.section-title h2 {
font-size:26px;
}
3) Change transparent colors and images on header and footer.
You can edit wp-admin >> appearance >> customize >> footer >> footer top and Inner pages >> Title Section there you can change images. There are several other places where you can change images and colors please try to explore appearance >> customize's each section to know what options you have. Below is CSS for footer its 90% 1 is 100% solid color.
.footer {
background-color: rgba(35,10,16, 0.9);
color: #FFF;
}
//For Title section
.title-section {
background-color: rgba(35, 10, 16, 0.7);
}
You can only use RGBA property for transparency. For other sections please find their classes by inspecting element above you can find the option for footer and title section.
How to show text in lowercase CSS
You can use following CSS change uppercase to lowercase or capitialize
.title-section h1 {
text-transform:lowercase;
/*text-transform:capitalize;*/
/*text-transform:uppercase;*/
}
lines inside /* */ are commented which means they are not effective and browser will ignore them. Just remove the comments from lines you want to use.
Change excerpt length sorry we cannot help you on this try to explore the options of elements. There you have options to limit the excerts. Site uses several types of posts excerpts its a lot of work to limit them. Please explroe the options of elements thanks. Otherwise you have to do this yourself on functions.php in child theme or parent theme. Just search on internet you can find help on this online.
How to change Logo size
To change logo size in veterinary WordPress theme you can simply include the following CSS and change 45px to your desired value add css in appearance >> customize >> addtional CSS
.header-wrap .logo img {
height: 45px;
width: auto;
}