Social icons + font size+tablets

@ingeborgandersson: Hello there,
Go to => Appearance => Customize => Additional CSS and add the following CSS Code.

/* To change the font size of social icons */
.social-navigation .icon {
	height: 20px;
	width: 20px;
}

/* To change the font size of section title of Team and Testimonial */
#testimonial-content-section .section-title, #team-content-section .section-title {
    font-size: 40px;
}

/* To change the position of Contact phone and email in the footer */
.contact-details > div {
    display: inline-block;
    width: auto;
}
.contact-phone {
    margin-right: 30px !important;
}

You can change the font size, height and width according to your choice.
Let me know if this works out!
Kind Regards,
Skandha

@ingeborgandersson: Hello there,
Go to => Appearance => Customize => Additional CSS and add the following CSS Code.

/* To change the font size of menu on the header */
#site-navigation a {
    font-size: 20px;
}

/* To change text in Testimonial and Team Section
.team-content-wrapper .entry-summary, .testimonial-content-wrapper .entry-content {
    font-size: 25px !important;
}

/* To reduce the distance above Testimonial section */
.home #content, .home #content .wrapper {
    padding-bottom: 0;
}

/* To get rid of the headlines on top of each page */
.page article .entry-header {
    display: none;
}

/* To reduce the font size of pagination at the bottom of posts */
.navigation.post-navigation .nav-links h1 {
    font-size: 30px;
}

For the title appearing in the footer of every blog post try deactivating all your plugins and check if the issue is resolved. Let me know if the issue persists

You can change the font size according to your choice.
Let me know if this works out!
Kind Regards,
Skandha

@ingeborgandersson: Hello there,
Can you let me know which headline you are referring to?

The font size changes with changes in the screen size to maintain uniformity.

Go to => Appearance => Customize => Additional CSS and add the following CSS Code.

/* To change font size of the archive page */
.archive-grid article .entry-summary {
    font-size: 30px;
}

/* To have quotation mark on the testimonial section */
#testimonial-content-section .entry-content::before {
    content: "\201C";
    font-family: "georgia";
    display: block;
    font-size: 94px;
    font-size: 5.875rem;
    line-height: 50px;
}

To have the portfolio section only on Portfolio page please enable the section on the entire site and let me know on which page you want it enabled.

To get you contact form to another page.
Go to => Dashboard => Contact Form 7 => Copy the short code for the form you want to use => Edit the post/page where you want the form => Add New Block => Widgets => Shortcode => Paste the code and Update the post/page.

Can you please attach a screenshot of the issue with the whole page moving to the left on scroll on mobile phones?

Let me know if this works out!
Kind Regards,
Skandha

@ingeborgandersson: Hello Ingeborg,
Please replace the code

/* To get rid of the headlines on top of each page */
.page article .entry-header {
    display: none;
}

with the code below.

.page article .entry-header .section-title {
    display: none;
}

Let me know if this solves the Team section title issue.
Kind Regards,
Skandha

@ingeborgandersson: Hello Ingeborg,
Go to => Appearance => Customize => Theme Options => Homepage/Frontpage Options => Recent Posts Sub Heading => Change the text here and Publish.

Let me know if this works out!
Kind Regards,
Skandha