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HTML How to Make a Website Styling Web Pages and Navigation Build Navigation with Unordered Lists

I just realized my pictures don't have any spaces between each other. What am I doing wrong? https://w.trhou.se/l9rxgxdb

/*********************** HEADING ***********************/

header: { float: left; margin: 0 0 30px 0; padding: 5px 0 0 0; width: 100%; }

logo {

text-align: center; margin: 0; }

h1 { font-family: 'Changa One', sans-serif ; margin: 15px 0; font-size: 1.75em; font-weight: normal; line-height: 0.8em; }

h2 { font-size: 0.75em; margin: -5px 0 0; font-weight: normal; }

/*********************** NAVIGATION ***********************/

nav { text-align: center; padding: 10px 0; margin: 20px 0 0; }

nav ul { list-style: none; margin: 0 10px; padding; 0; }

nav li { display: inline-block; }

/*********************** FOOTER ***********************/

footer { font-size: 0.75em; text-align: center; clear: both; padding-top: 50px; color: #ccc; }

/*********************** PAGE: PORTFOLIO ***********************/

gallery {

margin: 0; padding: 0; list-style: none; }

gallery li {

float: left; width: 45%; margin: 2.5; background-color: #f5f5f5; color: #bdc3c7; }

gallery li a p {

margin: 0; padding: 5%; font-size: 0.75em; color: #42f445 }

Ismael Ramerez:

Your missing the "#" syntax for your logo id & your gallery id in your CSS stylesheet. "#" is used for id's & "." for classes in CSS. You must be very careful with syntax. If you omit it or use the incorrect syntax, you'll get unexpected behavior.