Welcome to the Express Community. Webpages is one of the most forgiving formats in Express because it handles a lot of the layout “math” for you. Here are a few tips for building pages in Express.
Start with clean layout with heading structure. Page title is always Heading 1. Express lets you assign heading levels to organize sections. Use them in order (H2 for sections, H3 for subsections) instead of making body text big and hold to fake a heading. Taking care to do this does three jobs at once. 1) it forces you to outline your content. 2) it creates consistent visual hierarchy. 3) it makes your page navigable for screen reader users. If your page has more than four or five sections, add the Table of Contents components so it is easier to navigate.
Let your theme make your font decisions. Express themes pair fonts that already work together, so resist mixing extra fonts. Two typefaces is plenty for a whole page. For readability keep body text to the point avoid long passages in italics or all caps. Check the text color to make sure it has strong color contrast against the background especially when text is sitting on photos. Stand back from the page, if you have to squint to read something on the page, your visitors will too.
Spacing is most built in with Express. Often when starting out with Express the issue is cramming too much text into a space. Break long text into shorter blocks separated by images. Use the Split Layout Component when you want text and an image side by side instead of using the wrap text around the photo. White space makes a page easier to read and gives a polished look.
Preview before you publish. Preview your page on a real phone before you publish. Express pages reflow automatically for smaller screens. The reflow is a huge advantage over hand-built sites, however you should check to be sure the reflow look right. The side-by-side layout stacks vertically on phones so check to make sure the order makes sense when stacked. I open my published link on my own phone before I share it. Long headers and text on images are the things I see break most often on mobile, so keep header short and text as body text.
There is walkthrough of the webpage editor and components by Adobe. Here is the link
https://helpx.adobe.com/express/web/design-webpages/design-webpage.html
Feel free to reach out if you have questions or anything is unclear. Happy to answer questions.
Sheri Lee @Create Humanly