body {
    /*background: url('bg.jpg') no-repeat center bottom fixed;*/
    background-size:cover;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: #333;
    width: 100%;
    background-color: #fff;
}

a {
  color: #337ab7;
  text-decoration: none;
}
a:hover,
a:focus {
  color: #23527c;
  text-decoration: underline;
  outline: thin dotted;
  outline-offset: -2px;
}

p {
    margin-top: 0;
}

h1 {
    font-size: 1.2em;
}

/****************************navbar************************************/
.topnav {
    overflow: hidden;
    list-style: none;
    text-align: center;
    margin-top: 0px;
    margin-left: -45px;
}

.topnav li{
    display:inline;
    text-transform: uppercase;
    font-weight: 700;
}

/* Style the links inside the navigation bar */
.topnav a {
    display: inline-block;
    color: #f2f2f2;
    text-align: left;
    padding: 12px 18px;
    text-decoration: none;
    font-size: 18px;
}

/* Change the color of links on hover */
.topnav a:hover {
    background: rgba(255,255,255,0.8);
    color: #333;
}

/* Add a color to the active/current link */
.topnav a.active {
    background-color: #4CAF50;
    color: white;
}

/*******************************containers*************************/
.bg-scroll {
    height: 100vh;
}

.container-main {
    width: 750px;
    margin-left: auto;
    margin-right: auto;
    padding:50px;
    vertical-align: top;
    background: rgba(255,255,255,0.8);
}

#right-main {
    float: right;
    width: 450px;
}
#left-main {
    float: left;
    width: 220px;
    height: 250px;
    padding-right: 50px;
}

/***************background************/
img{
    object-fit: contain;
    vertical-align: middle;
    display: block;
    max-width: 100%;
    height: auto;
}