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CSS

i think this wrong pls correct and send me were is a wrong and right

css/main.css
 /*********************************
    GENERAL
    ********************************/

    body{
        font-family: 'Open Sans', sans-serif;
    }


    #wrapper {
        max-width: 940px;
        margin: 0 auto;
        padding: 0 5%;
    }

    a {
        text-decoration: none;
    }

    img {
        max-width: 100%;
    }

        /*********************************
    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;
    }

    nav a {
        font-weight: 800;
        padding: 15px 10px;
    }

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

    .social-icon {
        width: 20px;
        height: 20px;
        margin: 0 5px;
    }


/*********************************
    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: #bdc3c7;
    }


    /*********************************
    COLOR
    ********************************/
    /*site body*/
    body {
        background-color: #fff;
        color: #999;
    }

    /* green header */
    header {
        background: #6ab47b;
        border-color: #599a68;
        }

    /* nav background on mobile */
    nav {
        background: #599a68;
    }

    /* logo text */
    h1, h2 {
        color: #fff;
    } 

    /* Link */
    a {
        color: #6ab47b;
    }

     /* selected nav link */
    nav a, nav a Visited {
        color: #fff;
    }

    /* nav background on mobile */
    nav a.selected {
    color: #32673f;
    }

1 Answer