*{
    box-sizing: border-box;
}

html{
    background-color: lightgray;
    font-family: Arial, Helvetica, sans-serif;
}

body, html{
    padding: 0;
    margin: 0;
}

header{
    border-top: 2px solid #49c7bc;
    height: 80px;
    margin-bottom: 2em;
    background-color: #222222;
    font-size: smaller;      
}

.header_container{
    max-width: 600px;
    margin: 0 auto;
    overflow: auto;
}

.header_left{
    float: left;
    width: 100px;
    height: 100px;
    background-color: #49c7bc;
    color:white;
    text-align: center;
    margin: 1px;
    padding: 1px;
    display: flex;
    justify-content: center;
}

.header_center{
    float: right;
    overflow: auto;
    display: flex;
    margin: 1em;    
}

.header .header_center a{
    text-decoration: none;
    text-align: left;
    margin: 3px;
    color: #848484;
    justify-content: space-between;
}

.header_center .nav_links{
    display: flex;
    list-style-type: none;    
}

.section_container h2{
    border-bottom: 2px double #222222;
}

.section_container{
    background-color: white;
    max-width: 600px;
    margin: 0 auto 2em;
    padding: 0 1em;
    overflow: auto;
    
}

.section_container, .text{
    list-style-type: none;
}

footer{
    margin-top: 3em;
}

.footer_container{
    display: flex;
    background-color: #222222;
    max-width: 600px;
    margin: 0 auto;
    padding: 0 1em;
}

.footer_links{
    padding: 0;
}

.footer_text{
    width: 20%;
}
      
.footer_text .footer_link{
    list-style-type: none;
}

.footer_text h3{
    color: white;
}

.footer_text a{
    text-decoration: none;
    text-align: left;
    margin: 3px;
    color: #848484;
}