*{
    margin: 0;
    padding: 0;
}
*, :after, :before {
    box-sizing: border-box;
}

html {
    font-size: 100%;
}

body {
    margin: 0;
    /* padding: 20px; */
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1rem;
    color:#fff;
}

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

h2, h3, a {
    color: #050708;
}

a {
    text-decoration: none;
}

.logo {
    margin: 0;
    font-size: 1.45em;
}

.main-nav {
    margin-top: 5px;
}

.logo a, .main-nav a {
      padding: 10px 15px;
      text-transform: uppercase;
      text-align: center;
      display: block;
}

.main-nav a {
    color: #000000;
    font-size: .99em;
}

.main-nav a:hover {
    color: #718daa;
}

.header {
    padding-top: .5em;
    padding-bottom: .5em;
    border: 1px solid #a2a2a2;
    background-color: #f4f4f4;
    -webkit-box-shadow: 0px 0px 14px 0px rgba(0,0,0,0.75);
    -moz-box-shadow: 0px 0px 14px 0px rgba(0,0,0,0.75);
    box-shadow: 0px 0px 14px 0px rgba(0,0,0,0.75);
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 5px;
}

@media (min-width: 640px) {
    .header,
       .main-nav {
        display: flex;
    }
    .header {
        flex-direction: column;
        align-items: right;
        /**
        * ini sintax scss.
        */
        /* .header{
            width: 80%;
            margin: 0 auto;
            max-width: 1150px;
        } */
    }
}

.wrapper {
    margin: auto;
    /* max-width: 75rem; */
}

aside, footer, header, nav, main, section {
    display: block;
    margin: 0;
    padding: 1.25rem;
    border: 1px solid #000;
    color:#fff;
}

main {
    background:#000;
    min-height: 100vh;
}

.header {
    background:#03a9f4;
}

.navbar {
    display: flex;
}

.hero {
    background:#d22b1f;
}

@media screen and (min-width: 640px) {
    .header {
        flex-direction: row;
        justify-content: space-between;
    }
    .flex-container {
        display:flex;
    }
}

.content {
    flex: 1;
    background:#129a22;
    /**
    * vh = viewport height
    */
    min-height: calc(100vh - 65px);
}

.sidebar {
    flex:0 1 300px;
    background:#673ab7;
}

.sidebar > img {
    display: block;
    width: 120px;
}

img.center {
    border: 1px solid #ddd;
    margin: 0 auto;
}

.footer, .sidebar {
    border:1px solid #000;
}

.footer {
    background:#616161;
}

.profile img{
    width: 200px;
}

.image-rounded{
    border-radius: 20px;
}

/**
* gallery
*/

.gallery {
    display: block;
    overflow: hidden;
}
.poto-list {
    display: inline;
    margin-right: 5px;
}

img.poto-item{
    border-radius: 10px;
}